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Won Hee Choi 34 Articles
Pathologic Features of Small Cell Lymphoid Neoplasms
Won hee Choi
Yeungnam Univ J Med. 2007;24(2 Suppl):S118-124.   Published online December 31, 2007
DOI: https://doi.org/10.12701/yujm.2007.24.2S.S118
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The category of small sized cell lymphoid neoplasms include chronic lymphocytic leukemia (CLL) / small lymphocytic lymphoma (SLL), mantle cell lymphoma (MCL), follicular lymphoma, marginal zone lymphoma (MZL) and lymphoplasmacytic lymphoma (LDL) / Waldenstrom macroglobulinemia (WM). The unifying feature for this group of neoplasms is their derivation from mature B cell and are indolent lymphomas mostly. But, their morphological and immunophenotypical findings, cytogenetics and molecular genetics exhibit considerable heterogenic expression. The recent identification about pathologic features of the small cell lymphoid neoplasms might contribute to their better understandings.
Mesenchymal Chondrosarcoma: 3 Cases Report.
Mi Jin Gu, Young Kyong Bae, Joon Hyuk Choi, Mi Jin Kim, Won Hee Choi, Duk Seop Shin, Jang Soo Suh
Yeungnam Univ J Med. 2000;17(1):87-92.   Published online June 30, 2000
DOI: https://doi.org/10.12701/yujm.2000.17.1.87
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Mesenchymal chondrosarcoma is a rare malignant tumor of skeletal and extraskeletal origin, and which shows aggressive local behavior as well as a high metastatic potential. We report 3 cases of mesenchymal chondrosarcoma. Two cases were male and one was female. The ages ranged from 25 to 32 years(mean: 28 years). Tissue was obtained by wide excision in two patients, and incisional biopsy in one. The mass locaterd in the rib(case 1), orbital floor(case 2), and abdominal wall(case 3). Roentgenographically, the tumor resembles ordinary chondrosarcoma, showing osteolytic and obstructive appearance with stippled calcification. Grossly, the tumor was lobulating, solid fish-fleshy like mass with calcification and ossification. Histologically, the tumor shows characteristic bimorphic pattern composed of islands of well differentiated hyaline cartilage admixed with a cellular area of undifferentiated small cells. The small cells usually displayed a hemangiopericytoid or an alveolar pattern.
Expression of Oncogene Product in the Colorectal Carcinoma.
Young Ran Shim, Woo Young Jang, Kyoung Chan Choi, Joon Hyuk Choi, Won Hee Choi, Min Chul Shim
Yeungnam Univ J Med. 1995;12(2):210-225.   Published online December 31, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.2.210
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The expression of p62"' and p2l can be seen in many solid tumor, but the pattern and incidence of expression were different according to organ, countries, and examiners, thus it is not definitely defined. Total 67 colorectal carcinoma in paraffin sections are analysed by immunohistochemically for evaluation of the p62and p21- expression according to the age, sex, chief complaints, location, differentiation, modified Dukes stage, using the specific monoclonal antibodies. The results were summarized as follows : The age of patients ranged from 32 years to 82 years. The mean age was 57.6 years. The expression of p 62y' and p21 was not correlated with age. Male was 29 cases(43.3%) and female was 38 cases(56.7%). The male to female ratio was 1:1.31. The and 95.0% in moderately differentiated adenocarcinoma, 90.0% and 90.0% in poorly differentiated <,;, adenocarcmoma, 100.0% and 100.0% in mucinous carcinoma. The positive rate of p62!and and p2l' was 94.1% and 88.2% in Dukes stage B,, 96.0% and 96.0% in Dukes stage B,, 100.0% and 100.0% in Dukes stage C,, 100.0% and 88.9% in Dukes stage C, and 100.0% and 100. o% in Dukes stage D. The expression of p62 y' in metastatic colorectal carcinoma showed diffuse and strongly positive reaction than primary colorectal carcinoma. The expression of p21 in primary colorectal carcinoma showed diffuse and strongly positive reaction than metastatic colorectal carcinoma.
A study of PCNA Expression in Gastric Adenoma and Adenocarcinoma.
Mi Jin Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1995;12(1):1-9.   Published online June 30, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.1.1
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A monoclonal antibody to PCNA, which can be used on routinely processed tissue, was applied to 25 cases of gastric adenomas and 64 cases of gastric adenocarcinomas in order to diffentiate adenoma and adenocarcinoma and also to evaluate the prognostic value in adenocarcinoma. The results were summerized as follows: The PCNA labelling index was 29.14+/-12.77% in control, 44.09+/-17.11% in adenoma and 80.15+/-10. 69 in adenocarcinoma, resulting in significant increase in adenocarcinoma compared to adenoma. In adenocarcinoma, no significant correlation was observed between PCNA labelling index and histologic grade, and there -was increased tendency of PCNA labelling index in proportion to depth of invasion without statistical significance. The PCNA index was significantly increased in advanced adenocarcinoma compared to early gastric carcinoma, and also in positive nodal metastasis group than in negative group. From above results, the PCNA stain will be able to provide a helpful method for the differential diagnosis between gastric adenoma and adenocarcinoma, and could be a useful prognostic factor in adenocarcinoma if other factors are considered together.
A revised European-American classification of lymphoid neoplasms: a proposal from the International Lymphoma Study Group
Won Hee Choi
Yeungnam Univ J Med. 1995;12(1):154-155.   Published online June 30, 1995
DOI: https://doi.org/10.12701/yujm.1995.12.1.154
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  • Low-grade malt lymphoma of the nasopharynx in young adults: Successful treatment of a rare diagnosis at a rare site by radiotherapy
    Sankalp Singh, Sharad Bhatnagar, Niharika Bisht, Amul Kapoor, Prabha Shankar Mishra, Nishant Lohia
    Journal of Cancer Research and Therapeutics.2024; 20(1): 429.     CrossRef
Fine structure and detoxification kinetics in kupffer cells after injection of endotoxin in rats.
Joon Hyuk Choi, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1993;10(2):313-337.   Published online December 31, 1993
DOI: https://doi.org/10.12701/yujm.1993.10.2.313
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The aim of this study was to clarify the role of Kupffer cells in the mechanism of endotoxin-induced liver injury. The study on fine structure of Kupffer cells was performed after the injection of endotoxin. The endotoxin(Escherichia soli lipopolysaccharide 026: B6, 1.5mg/100 g of body weight) was intraperitoneally injected in Sprague-Dewley rats. Animals were sacrificed at 1/4, 1/2, 1, 2, 4, 8, 16, 24, 72 and 120 hours after the injection of endotoxin. Livers were extirpated and processed to be examined by light and electron microscopy. The results obtained were summerized as follows: Early changes observed in liver after endotoxin injection included the increased number and hypertrophy of Kupffer cells, infiltration of neutrophils and presence of fibrin thrombi within the sinusoids. The coritinuous increase of the Kupffer cells in number with hypertrophy, congestion and infiltration of inflammatory cells within the sinusoids were observed. Hepatocytes showed* fatty change and occasional necrosis. At 72 hours the congestion decreased. At 120 hours the number of Kupffer cells was increased, but the morphology of Kupffer cells became similar to that of the control group. The numbers and sizes of primary and secondary lysosomes and amount of euchromatin of Kupffer cells increased. Swellings and increase in number of mitochondria, Golgi complex, smooth endoplasmic reticulum, rough endoplasmic reticulum were evident. Microthrombi were present within the sinusoids. The swelling of rough endoplasmic reticulum and mitochondria, decrease of glycogen particles, fatty change, hypoxic vacuoles, pyknotic nuclei and occasional necrosis were observed in hepatocytes. At 72 hours the number of secondary lysosomes in Kupffer cells decreased. At 120 hours the morphology of Kupffer cells became similar to that of the control group. According to these results, it was postulated that the endotoxin was initially taken up by pinocytosis into Kupffer cells and degraded in secondary lysosomes of activated Kupffer cells. Kupffer cells may play an important role in the defense mechanism of liver during endotoxemia. The dysfunction of Kupffer cells and ischemia by sinusoidal microthrombi may cause liver injury.
Intraoperative Pathologic Consultation .
Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1993;10(1):18-27.   Published online June 30, 1993
DOI: https://doi.org/10.12701/yujm.1993.10.1.18
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No abstract available.
Histopathologic consideration of hepatocellular carcinoma.
Hae Joo Nam, Dong Suk Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1992;9(2):351-358.   Published online December 31, 1992
DOI: https://doi.org/10.12701/yujm.1992.9.2.351
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Hepatocellular carcinoma represents approximately 90% of the primary liver cancers. Recently, its incidence tends to be increased. Thirsty seven cases from 1986 to 1991 diagnosed as hepatocellular carcinoma by resection were analyzed to know their histopathologic feature and related clinical findings. The average age at the time of resection was 53.1 years, with frequent occurrence in third and fourth decades. Microscopically, the trabecular type was the most frequent growth pattern (35.1%) and classic hepatocyte-like cell type was the most frequent cell type (75.7%). The tumors are mainly moderately differentiated and frequently associated with liver cirrhosis. In comparison of cytological differentiation with liver cirrhosis, there was a tendency for well-differentiated tumors to arise in cirrhotic livers more often than poorly differentiated tumors, and the tendency was statistically significant. But differentiation and tumor size did not show significant correlation. Also statistically significant correlations were not observed between the level of alpha-fetoprotein and tumor size, and between the level of alpha-fetoprotein and differentiation.
Gastric mucosal damage by bile acid.
Hyun Hong Cho, Jeong Ill Suh, Keyong Hee Lee, Tae Nyeun Kim, Moon Kwan Chung, Hyun Woo Lee, Won Hee Choi, Chang Heon Yang
Yeungnam Univ J Med. 1992;9(2):342-350.   Published online December 31, 1992
DOI: https://doi.org/10.12701/yujm.1992.9.2.342
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To investigate the effect of bile acid on gastric mucosa, we performed biologic test using Sprague-Dawley rat. Mixture solution of TDCA 15mM and Hcl of pH 3 was given into stomach to one group and HCl of pH 3 was given into stomach to another group. The significant gastric mucosal change was vasodilation and edema, that was disappeared progressively. These findings suggest the bile acid and damage gastric mucosa.
Ultrastructural changes of fat-storing cells in experimental hepatic fibrosis.
Mi Jin Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1992;9(2):224-238.   Published online December 31, 1992
DOI: https://doi.org/10.12701/yujm.1992.9.2.224
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Hepatic fibrosis was induced in Sprague-Dawley rate to evaluate the ultrastructural changes of fat-storing cells (Ito cells). For experimental induction of liver fibrosis, the rats were administered intraperitoneally with 0.5 ml of 50% Ccl4 solution per Kg body weight, twice weekly for 12 weeks. The rats were sacrificed every week. The liver tissues were examined under light and electron microscopes. And the immunohistochemical study of desmin was also performed. The results were summarized as follows: Light microscopic findings: The cellular infiltrations was inflammatory cells and Kupffer cells developed from 1 week after Ccl4 injection, and were the most severe in 4 weeks. The strong immunoreactivity for desmin was also evident in 4 weeks. The centrilobular necrosis and fibrosis developed from 2 weeks after injection, and the necrosis persisted until 8 weeks. The progress of fibrosis was accompanied by decreases in cellular infiltration and reactivity for desmin, and increased gradual nodular formation was also observed. The cirrhosis was developed after 10 weeks. Electron microscopic findings: An increase in number of fat-storing cells was observed from 1 week after injection. Transitional cells characterized by a depletion of lipid droplets and a hypertrophy of the rER appeared after 2 weeks. The number of transitional cells with abundant collagen fibers in the extracellular spaces increased in 4 weeks. With progression of fibrosis the number of fat-strong cells decreased and proliferating fibroblasts with dilated rER were observed. According to these results it was revealed that there was an apparent transition from fatstrong cells to transitional cells and to fibroblasts. These cells had a few similar characteristics and may belong to the same cell population. Thus it was suggested that fatstrong cells might play an important role in hepatic fibrosis.
Effect of phenobarbital pretreatment on the hepatotoxicity of carbon tetrachloride in rat.
Young Soo Byun, Hae Joo Nam, Mi Jin Kim, Dong Suk Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1992;9(1):137-148.   Published online June 30, 1992
DOI: https://doi.org/10.12701/yujm.1992.9.1.137
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The purpose of this study was to evaluate the influence of phenobarbital (PB) on hepatotoxic effect of carbon tetrachloride (CCI4) which induces centrilobular necrosis in liver. Rats were injected intraperitoneally CCI4 dissolved in olive oil by a dose of 0.4 mg/kg. For change related to PB pretreatment, rats were injected CCI₄ 0.4mg/kg after PB pretreatment. The liver samples were taken in 6, 12, 24, 48, 72 and 120 hours after CCI₄ and/ or PB injection. Extracted liver tissue was examined with light and electron microscopes. The results were summarized as follows: 1. Light microscopic findings: In CCI₄ group, centrilobular necrosis developed from 6 hours after injection, was the most severe in 48 hours, and recovered after 72 hours. In addition to necrosis, fatty change and pale cell change were accompanied. In PB-CCI4 group, necrosis occurred from 6 hours after CCI₄ injection and continued to 72 hours, and the degree of necrosis was more severe than that of CCI₄ group and pale cell change was decreased. 2. Electron microscopic findings: In CCI4 group, the early principal change was clumping and vesicular dilatation of endoplasmic reticulum. In PB-CCI₄ group, the degenerative change of endoplasmic reticulum was aggravated and the mitochondria also revealed severe degenerative change. According to the results, it was revealed that CCI₄ hepatotoxicity primarily began with the damage of endoplasmic reticulum, then damage of other cell organelles and cell necrosis followed, and these cytotoxic effects were aggravated by PB pretreatment.
Effects of carbon tetrachloride on structures in hepatocytes following DMN induced hepatotoxicity.
Young Chun Kang, Hae Joo Nam, Dong Suk Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1991;8(2):84-94.   Published online December 31, 1991
DOI: https://doi.org/10.12701/yujm.1991.8.2.84
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The purpose of this study was to evaluate the influence of high dose carbon tetrachloride (CCI4) on the hepatotoxic effect of dimethylnitrosamine (DMN) which induces acute hemorrhagic necrosis in liver. Rats were injected intraperitoneally DMN dissolved in physiologic saline by a dose of 40 mg/kg. For changes related to CCI⁴ pretreatment, rats were injected intraperitoneally CCI⁴ dissolved in olive oil by a dose of 0.4 mg/kg, and then injected DMN. The livers were extracted from the rats 3, 6, 12, 24, 48, 72, and 120 hours after CCI⁴ and/ or DMN injection. Liver tissues were examined with light and electron microscopes. The results were summarized as follows; Light microscopic findings: Severe centrilobular hemorrhagic necrosis developed from 12 hours after injection of DMN and continued to 120 hours. On injection of DMN after CCI4 pretreatment, Massive necrosis occurred early. But active regenerative changes were produced in 24 hours. In 120 hours, the liver recovered in almost normal appearance. The degree of necrosis in pretreated group was similar to that in DMN injection only, and the time of recovery was faster in pretreated group. Electron microscopic findings: The early change was mainly disorganization of RER in DMN injection, and clumping and vesicular dilatation of ER in injection of CCI4. In pretreatment group, the early change was similar in appearance with CCI4 group, but severer in degree. According to the results, it was revealed that acute toxic effect of DMN was recovered more rapidly in pretreatment group. Thus it was suggested that CCI4 had protective effect in DMN hepatotoxicity.
Histopathological study of gastric adenoma.
Dong Sug Kim, Hae Joo Nam, Won Hee Choi, Tae Sook Lee, Moon Kwan Chung
Yeungnam Univ J Med. 1991;8(2):76-83.   Published online December 31, 1991
DOI: https://doi.org/10.12701/yujm.1991.8.2.76
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A total of 53 gastric adenomas from endoscopically biopsied gastric mucosa were examined histopathologically. The average age at the time of endoscopic biopsy was 59 years, and gastric adenomas were found to be more frequent in the aged, particularly above the age of 50. The majority of adenomas occurred at the antrum. Concerning the shape of the adenomas, Yamada type II was more frequent (55%). All adenomas were accompanied by varying degree of intestinal metaplasia, and this findings suggest that gastric adenoma develops from intestinal metaplasia. In adenomas with severe atypia (grade III), endocrine cells (argyrophil and argentaffin cells) were markedly decreased or absent. Gastric adenocarcinomas coexistent with adenoma were seen in 5 (9.4%) out of 53 cases, and were more frequent in male than female patients (sex ratio, 4:1) and the average age was 61.4 years. It is suggested that there is a necessity of thorough follow-up study for definitive correlation between gastric adenoma and adenocarcinoma.
Metastatic tumors in supraclavicular lymph node: pathological analysis of 125 cases.
Dong Sug Kim, Hae Joo Nam, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1991;8(2):70-75.   Published online December 31, 1991
DOI: https://doi.org/10.12701/yujm.1991.8.2.70
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Supraclavicular lymph nodes are unique in that they can attract metastases from almost anywhere in the body and most common sites of metastasis from an unknown primary source. 125 cases which had been diagnosed as metastatic supraclavicular lymph node during the period between May 1983 and August 1991, were analyzed pathologically, and following distinctive characteristics could be outlined: 1) The most frequent sites of metastasis from primary lesions are lung (43%), stomach (23%), lymphoreticular (6%), biliary (5%), esophagus (2%), and pancreas (2%). 2) Histologic examination of metastatic supraclavicular lymph node revealed adenocarcinoma (57%), squamous cell carcinoma (12%), undifferentiated carcinoma (9%), small cell carcinoma (7%), malignant lymphoma (6%), malignant melanoma (1%) and undetermined carcinoma (8%). 3) In cases that histologic types were squamous cell carcinoma, undifferentiated carcinoma, small cell carcinoma and undetermined carcinoma, the most frequent primary site was lung.
Nucleolar organizer regions in glioma.
Hae Joo Nam, Dong Suk Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1991;8(2):63-69.   Published online December 31, 1991
DOI: https://doi.org/10.12701/yujm.1991.8.2.63
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Nucleolar organizer regions (NOR) are loops of ribosomal DNA (rDNA) which are transcribed by RNA polymerase I. They produce ultimately ribosome and protein. Thus they are believed to reflect nuclear activity. We applied silver colloid staining technique to human glioma to examine relationship between the mean number of Ag-NOR and histopathological grading. The mean number of Ag-NOR (±S. E of the mean) were 1.17±0.07 in normal brain, 1.53±0.25 in astrocytoma, 2.37±0.71 in malignant astrocytoma. And 2.88±0.41 in glioblastoma multiforme. And there was a statistically significant difference among these. The results show that Ag-NOR technique is a rather simple and rapid method and will become a helpful tool for estimation of the proliferative potential of glioma.
Computerization of Surgical Pathology Work.
Dong Sug Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1990;7(1):215-219.   Published online June 30, 1990
DOI: https://doi.org/10.12701/yujm.1990.7.1.215
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The authors developed a comfortable program for routine work of surgical pathology. We used IBM PC (80386) and Foxbase plus program. The main function of this program was automatic coding and concurrent surgical report printing. During gross printing, previous biopsy number and its diagnosis were automatically searched and printed below gross description. The reported data were stored during surgical report printing simultaneously, and thus the typist's workload became considerably reduced. Search for specific cases could be performed by patient's name, surgical number, hospital number, diagnostic code numbers (SNOMED code micro glossary), and certain disease entities on very short duration.
A Case of Intramuscular Lipoma in the Malar Area.
Jung Soo Hong, Dae Hoon Lee, Jung Hyun Seul, Won Hee Choi
Yeungnam Univ J Med. 1990;7(1):181-185.   Published online June 30, 1990
DOI: https://doi.org/10.12701/yujm.1990.7.1.181
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Lipomas are common soft tissue that are usually located in the subcutaneous tissue. And intramuscular lipomas commonly arise in the upper and lower extremities, where they usually involve the large muscles. Intramuscular lipoma, also referred to as an infiltrating lipoma, is an unusual benign slow growing tumor composed of mature fat cell interdigitating with skeletal muscle. However, intramuscular lipomas are exceedingly rare in the face. We have been experienced a case intramuscular lipoma that located in the malar area. Because of the rarity of these tumors and their propensity to recur without adequate surgery, the case report is presented here. Achievement of surgical margin is essential as the recurrent rate may be as high as 15% to 62.5% without complete excision.
Sclerosing hemangioma of lung: 3 case report.
Dong Sug Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1990;7(1):145-149.   Published online June 30, 1990
DOI: https://doi.org/10.12701/yujm.1990.7.1.145
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Sclerosing hemangioma of the lung is uncommon benign neoplasm of uncertain histogenesis. Their radiologic appearance is relatively distinct and well defined. Recently we experienced 3 cases of sclerosing hemangioma of the lung in 54, 52, 51 years old women. The light microscopic findings are similar to the features reported by Liebow and Hubbell (1956).
Microvascular Anastomosis Using Horizontal Mattress Suture Technique.
Sang Hyun Woo, Jeong Cheol Kim, Yung Sik Jung, See Ho Choi, Won Hee Choi
Yeungnam Univ J Med. 1989;6(2):71-78.   Published online December 31, 1989
DOI: https://doi.org/10.12701/yujm.1989.6.2.71
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Horizontal Mattress Suture Technique on Microvascular Anastomosis of rat (body weight: 200-250 gm) femoral artery was evaluated. The present study was conducted to compare the horizontal mattress suture with simple interrupted suture on the suture time, patency rate of the sutured vessels, and the histological changes of surgical site of the vessel wall during wound healing period. The mean suture time of the vessel wall with horizontal mattress suture technique was 15 min 49 sec ± 2.14, which is significantly shorter than that of simple interrupted suture technique. The patency rate of the sutured vessel in both groups was statistically not different each other till post-operative 3rd day but patency rate of horizontal mattress suture was higher than that of simple interrupted suture at post-operative 3rd week. The histological findings such as intimal noss, medial degeneration and intimal regeneration were similar in both groups.
Three Cases of Primary Adenosquamous Carcinoma of Stomach.
Joon Hyuk Choi, Mi Jin Kim, Hae Joo Nam, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1988;5(2):189-193.   Published online December 31, 1988
DOI: https://doi.org/10.12701/yujm.1988.5.2.189
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Adenosquamous carcinoma of stomach is a mixed glandular-epidermoid tumor where both components are neoplastic. Its incidence is extremely rare. The five theories on the origin of squamous components are 1) island of ectopic squamous epithelium in the gastric mucosa, 2) squamous metaplasia of gastric epithelium, 3) squamous differentiation in a preexisting adenocarcinoma, 4) endothelial cell differentiated toward squamous elements, and 5) totipotential undifferentiated cells of the gastric mucosa. We experienced three cases of adenosquamous carcinoma. Case 1 was a 71-year-old female patient; an ulcerative lesion was present in the pylorus, measuring 5 cm in diameter. Case 2 was a 57-year-old male patient; an ulcerative lesion is present in the pylorus, measuring 6 cm in diameter. Case 3 was a 58-year-old female patient; an ulcerative lesion was present in the body and fundus, measuring 10 cm in diameter. Microscopic examination revealed a mixed malignant squamous and adenomatous component.
Clinical and Histopathological Studies on Carcinoma of the Uterine Cervix in Taegu.
Joon Hyuk Choi, Won Hee Choi, Suk Jae Hong, Tae Sook Lee
Yeungnam Univ J Med. 1988;5(2):121-128.   Published online December 31, 1988
DOI: https://doi.org/10.12701/yujm.1988.5.2.121
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Clinical and histopathological studies were made on 202 cases of malignancy of cervix, that were visited to the Department of Obstetrics and Gynecology, Yeungnam University Hospital, during 5 years from 1983 to 1987. The results were summarized as follows. 1. Malignancies of the uterine cervix were 10% of total female malignancies. 2. Among 202 cases, 195 cases (96.5%) were squamous cell carcinoma, in which 60 cases (30.0%) of carcinoma in situ, 9 cases (4%) of microinvasive, and 126 cases (62.5%) of invasive carcinoma were included. 3. The average age of the patients with squamous cell carcinoma was 49.4 years old; In case of carcinoma in situ, it was 43.8, microinvasive, 40.0, invasive 52.1 years old. 4. Clinical symptoms of the patient with squamous cell carcinoma in order of frequency were as follows; vaginal bleeding (47.5%), abnormal cytology (15.4%), and abnormal vaginal discharge (9.4%). 5. Duration of the chief complaints was most commonly less than 6 months (73.2%), and the average duration was 3.8 months. 6. The most common age of marriage was between 19 to 22 years old (46.5%). The average was 21.5 years old. 7. The gravity was 51.5% in 5-8 times, and average 6.2 times. The parity was 61.9% in 1-4 times, and average 3.9 times. 8. The subdivision of 126 cases of invasive carcinoma was made according to FIGO stage classification, stage I, 40 cases (31.8%), stage II, 54 cases(42.9%), stage III, 11 cases (8.7%), and stage IV, 8 cases (6.3%). 9. The histologic subtypes of invasive squamous cell carcinoma were distributed as follows; large cell keratinizing type, 25 cases (19.8%), large cell nonkeratinizing type, 101 cases (80.2%). 10. In the cytologic diagnosis, class I was 2 cases (1.9%), class II was 16 cases (15.1%), class III was 33 cases (31.1%), class IV was 31 cases (29.3%), class V was 24 cases (24.6%). 11. The frequency of lymph node metastasis was 7.5% in stage I, and 11.1% in stage II.
Graves' disease Associated with Idiopathic Thrombocytopenic Purpura and Iron Deficiency Anemia.
Jong Myung Kim, Sung Chul Yun, Soo Bong Choi, Hyun Woo Lee, Kyeong Dong Kim, Chung Sook Kim, Hei Joo Nam, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1988;5(1):173-179.   Published online June 30, 1988
DOI: https://doi.org/10.12701/yujm.1988.5.1.173
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Since 1931, sporadic reports have appeared noting an apparent association between hyperthyroidism and idiopathic thrombocytopenic purpura. Recent various studies suggested that these two diseases may share a similar immunologic background, but the exact mechanism is still a matter of speculation. This 22-year-old female patient visited this hospital because of general weakness and purpura of legs for 2 months. The laboratory findings were compatible with Graves' disease associated with idiopathic thrombocytopenic purpura. The platelet count was 16000/mm³, hemoglobin was 10.9 g/dl and MCV was 60.1fL. T3 was 490.53 ng/dL, T4 was 24 ug/dL and free T4 was 5.66 ng/dL. Antiplatelet antibody and antimicrosomal antibody were positive. The bone marrow findings were compatible with iron deficiency anemia and idiopathic thrombocytopenic purpura. The thyroid biopsy showed adenomatous goiter. She was administered with propylthiouracil, Beta-blocker, iron and prednisolon. On the 10th hospital day, platelet count was 184000/mm³, hemoglobin was 12.0 gm/dL and MCV was 67.5 fL. On the 20th hospital day, T4 was 10.35 ug/dL and free T4 was 2.30 ng/dL. Therefore she was discharged and followed up.
Four Cases of Primary Malignant Melanoma of the Nasal Cavity.
Mi Jin Kim, Hae Joo Nam, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1988;5(1):135-139.   Published online June 30, 1988
DOI: https://doi.org/10.12701/yujm.1988.5.1.135
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The primary malignant melanoma of the nasal cavity and paranasal sinuses is extremely rare and accounts for only between 0.6 and 2.5% of the total number of malignant melanoma at all sites. In the nose, the left side is involved in 60% of cases and the most frequent site is the septum followed by the inferior and middle turbinates. In the sinuses, the maxillary sinus is the site of origin 80% of cases, followed by ethmoid sinus. The tumors are sessile or polypoid, with variable color such as pink, white, brown or blank. Of all tumors, 10-30% are amelanotic, requiring special stains for melanin. When primary site of melanoma is mucosal origin, treatment of primary lesion is often hampered by anatomic restrictions and large size, which results from the delayed diagnosis caused by their location. We report 4 cases of primary malignant melanoma of nasal cavity with review of literature.
Histiocytic Medullary Reticulosis.
Kyoung Hee Lee, Myung Soo Hyun, Young Jo Kim, Bong Sup Shim, Kyung Dong Kim, Chung Sook Kim, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1987;4(2):165-172.   Published online December 31, 1987
DOI: https://doi.org/10.12701/yujm.1987.4.2.165
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The term histiocytic medullary reticulosis first was introduced by Scott and Robb-Smith. It is a clinicopathologic syndrome characterized by wasting, fever, lymphadenopathy, hepatosplenomegaly, pancytopenia, and is often accompanied by jaundice, purpura. Cardinal pathologic feature are systemized proliferation of atypical, neoplastic, erythrophagocytic D. We are here reporting one case which considered compatible for HMR, with a few elementary reviewed literatures.
Histopathological Studies on Tumors of Testis in the Taegu Area.
Suk Jae Hong, Tae Sook Lee, Won Hee Choi
Yeungnam Univ J Med. 1987;4(2):149-154.   Published online December 31, 1987
DOI: https://doi.org/10.12701/yujm.1987.4.2.149
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For evaluation on the histopathologic studies and age distribution of the testicular tumors in the Taegu area, the inguinal orchidectomized materials were collected at the Department of Pathology, College of Medicine, Yeungnam University, and the analyzed results were as follows: 1. In total of 11 cases of orchidectomized materials, germ cell tumors are 10 cases (90.9%). In germ cell tumors according to the histologic types, seminoma was 5 cases (45.5%), and embryonal carcinoma, 3 (27.2%). 2. The highest age incidence of the group is 20th and 30th, and the next, 50th and 10th.
A Case of Metastatic Carcinoma of the Skin.
Byung Chun Mun, Kae Yong Hwang, Jong Soo Choi, Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1986;3(1):357-360.   Published online December 31, 1986
DOI: https://doi.org/10.12701/yujm.1986.3.1.357
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We report a case of metastatic carcinoma of the skin in 62-year-old male who showed multiple nodules on the anterior chest, scalp, face and left axilla for 2 months duration. He suffered from lower abdominal discomfortness for 6 months. Histopathologic findings revealed atypical cell nests and some tubular or glandular formation in the dermis and subcutaneous fat tissue. Material in the lumen showed diastase resistant and PAS positive, and alcian blue positive at pH 2.4, but negative pH 0.4. So it represented sialomucin. We did not find primary site of malignant tumor. In view of clinical and histopathological findings, it was considered to be originated from the large intestine.
Total Dose Effect on Normal Skin of Hybrid Mice by Conventional Fractionated Irradiation.
Kyung Hee Jung, Myung Se Kim, Won Hee Choi
Yeungnam Univ J Med. 1986;3(1):261-267.   Published online December 31, 1986
DOI: https://doi.org/10.12701/yujm.1986.3.1.261
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Development of supervoltage treatment machine may minimize skin reaction by skin-sparing effect, but skin damage is still one of “the dose limiting factor” in radiation therapy. In spite of these importance, systemic histopathologic studies of skin in similar conditions which used in clinical treatment has not been performed so far. 60 mice were irradiated with conventional fraction (200x5/wk) and whole abdominal field (2x3 cm, from symphysis pubis to xyphoid process). Used machine was 250 KV, 24 mA. orthovoltage x-ray machine. Histopathological changes of acute skin reaction at the level of total irradiation dose were analyzed and possible mechanism of later chronic changes were investigated. Obtained results are as follows 1. In 1,000 rad irradiated group, only mild epidermal edema is noted. 2. In 2,000 rad irradiated group, slightly decreased number and size of hair follicles and appendages, dermal edema and scanty infiltration of inflammatory cells are visible. 3. In 3,000 rad irradiated group, marked increased capillary congestion and prominent infiltration of inflammatory cells are observed. 4. In 4,000 rad irradiated group, vascular wall thickening with proliferation of endothelial cells are prominent. Dermal thinning and hyalinization are newly developed. 5. In 5,000 rad irradiated group, complete desquamation of epidermis is not seen, despite of acceleration of all above mentioned changes.
Frozen Section: Application in the Surgical Pathology.
Won Hee Choi, Tae Sook Lee, Suk Jae Hong
Yeungnam Univ J Med. 1986;3(1):179-183.   Published online December 31, 1986
DOI: https://doi.org/10.12701/yujm.1986.3.1.179
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The frozen section technique is a means of intraoperative pathological diagnosis, and a procedure of great value to the surgeon. This method should be accurate, rapid and reliable. This method serves useful purposes, such as determining the presence of tumor, its type (especially whether it is benign or malignant), the adequacy of a biopsy of a suspected lesion, and the conditions of the surgical margins. But, it bears many disadvantages, the most of which is the danger of incorrect diagnosis. We studied the indications, the limitations, and the accuracy of the frozen section method and the materials studies was total of frozen section diagnosis of 809 cases was 98.1% with 0.5% of false negative, 0% of false positive 0.5% of incorrect histological diagnosis or grading errors, and 0.9% of deferred cases. The tissues submitted were lymph node, gastrointestinal tract, skin subcutaneous tissues in decreasing oder of frequency. The false positive case is not present, while the false negative cases were 4.
Histopathological Study of Carcinoma of the Colorectum in the Taegu Area.
Hae Joo Nam, Won Hee Choi, Tae Sook Lee, Suk Jae Hong
Yeungnam Univ J Med. 1986;3(1):33-39.   Published online December 31, 1986
DOI: https://doi.org/10.12701/yujm.1986.3.1.33
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A clinical and statistical study was done for 123 patients with histologically proven colorectal malignant tumor from 1983 to 1986 at the department of anatomical pathology. Yeungnam University Hospital. The results were as follows: 1. Ratio between male and female was 1.6:1 and incidence was most prevalent in 7th decades comprising 29.3%. 2. Location of tumor was the most frequent in rectum (65%). 3. Frequent symptoms and signs in case of right colon were pain, abdominal mass and bowel habit change. In left colon, they were pain, bowel habit change and bloody stool or melena. In rectum, they were bloody stool or melena, bowel habit change and pain. 4. Duration of symptom was 1 to 3 months (33.3%). 5. The most frequent histological type was adenocarcinoma (82.9%). 6. According to Duke's classification, 32.9% of the tumor were stage C2. 7. Operative procedures were Mile's operation (47.0%), right hemicolectomy (19.8%), and lower anterior resection (11.7%). 8. Polyps were the most frequent associated disease. 9. The most common complication was wound infection (11.1%).
A Case Combined Germ Cell Tumor in Testis.
Hae Joo Nam, Won Hee Choi, Tae Sook Lee, Jun Gyu Suh, Kyung Chul Lee
Yeungnam Univ J Med. 1985;2(1):293-297.   Published online December 31, 1985
DOI: https://doi.org/10.12701/yujm.1985.2.1.293
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Primary germ cell tumor of the testis is rare, which occupies 1 to 2% of all reported malignant male neoplasms. Combined primary germ cell tumor of the testis composed of embryonal carcinoma and seminoma is more rare tumor. The authors experienced a case of 50-year old male who presented with painless enlargement of right testicle. He has had radical orchiectomy and diagnosed by pathologically as combined germ cell tumor of testis. The testicle is measuring 180 gm in weight and 9×6×5 cm in dimension, and almostly replaced by tumor mass. Grossly the tumor is rubbery solid smooth tumor mass, with variegated cut surface with geographically outlined diffuse necrotic area. Histologically the tumor is composed of two components of tumor, which are solid growth pattern of large round to polyhedral cells with clear or granular cytoplasm and distinct cell border, and anastomosing glandular and papillary arrangement of anaplastic epithelial cells. The former corresponds to seminoma, and the latter to embryonal carcinoma. Each tumor lobule is separated by abundant fibrous stroma.
Prostatic Urethral Polyp Causing Lower Urinary Tract Obstruction: Report of a Case.
Dong Heon Lee, Jun Kyu Suh, Young Soo Kim, Tong Choon Park, Hae Joo Nam, Won Hee Choi, Tae Sook Lee, Kyung Chul Lee
Yeungnam Univ J Med. 1985;2(1):249-252.   Published online December 31, 1985
DOI: https://doi.org/10.12701/yujm.1985.2.1.249
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Polyps of the male urethra are relatively uncommon lesions, They usually arise from the prostatic urethra mostly verumontanum or just lateral to the verumontanum. Posterior urethral polyp often presents with hematuria, hemospermia and sometimes lower urinary tract obstruction. We recently experienced a pedunculated prostatic urethral polyp in a 63-year-old man who complained of gross total hematuria and difficult micturition for several years. On rectal examination the prostate was slightly enlarged with normal consistency. Excretory urogram showed a round filling defect in the right side of the bladder neck measuring about 2×2 cm in size. Cystourethroscopy revealed trabeculation of the vesical wall, mild bilateral prostatic hypertrophy and a round cystic mass with a long stalk arising from the prostatic floor 1cm. Proximal to the verumontanum which caused ball-valve obstruction in the bladder neck. This pedunculated polypoid mass was then resected at its base with resectoscope and was removed transurethrally using Lowsley's grasping forceps. The specimen was proved as fibrous polyp histologically.
Histopathological Studies on Carcinomas of the Stomach in the Taegu Area.
Suk Jae Hong, Tae Sook Lee, Won Hee Choi, Kyung Chul Lee
Yeungnam Univ J Med. 1985;2(1):65-69.   Published online December 31, 1985
DOI: https://doi.org/10.12701/yujm.1985.2.1.65
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For evaluation on the histopathologic studies, and age and sex distribution of the gatric carcinomas in the Taegu Area, the gastrectomized and gastroscopic biopsy materials were collected at the Department of Pathology, College of Medicine, Yeungnam University, and the analyzed results were as follows: 1. In total of 350 cases of gastroscopic biopsy materials adenocarcinomas are 344 cases (98.3%), squamous cell carcinomas and undifferentiated carcinomas are only 6 cases (1.7%). In adenocarcinomas the most of all are tubular type, 215 cases (61.4%). In age distribution the highest is the 50th age group, and 120 cases (34.3%), the next 60th, 81 cases (23.1%), 40th, 76 cases (21.7%), respectively. 2. In total of 130 cases of gastrectomized materials adenocarcinomas are 127 cases (97.7%), and are the highest incidence, the next, carcinomas originated from chronic peptic ulcer of the stomach, and are 3 cases (2.3%). In adenocarcinomas the highest are tubular type, 86 cases (66.2%), the next, signet ring cell type, 20 cases (15.4%). The highest age incidence of the age group is 50th, and the next, 60th, 40th, 30th, 70th and 10th age group, respectively.
A Case of Pseudomembranous Colitis.
Moon Kwan Chung, Chang Heon Yang, Heon Ju Lee, Young Hyun Lee, Chong Suhl Kim, Won Hee Choi
Yeungnam Univ J Med. 1984;1(1):171-178.   Published online December 31, 1984
DOI: https://doi.org/10.12701/yujm.1984.1.1.171
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Many reports have been made concerning underlying and associated conditions causing pseudomembranous colitis and it has been documented that occurrence of pseudomembranous colitis is related with antibiotics administration. Recent study showed that Clostridium difficile produced enterotoxin by colonization in intestinal wall and leading into pseudomembranous colitis. Diagnosis is based on positive culture of Clostridium difficile, positive test of Clostridium difficile toxin and specific histological findings after observation of whitish plaque on colonoscopic or sigmoidoscopic examination. Authors have experienced one case of pseudomembranous colitis developing after long term ampicillin administration in a case with colon cancer associated with diarrhea and diagnosis was confirmed by typical pseudomembrane on biopsy following classical whitish plaque absevation on sigmoidoscopic examination. Symptoms have been ameliorated by discontinuation of antibiotics and administration of metron-idazole in four days and disappearance of whitish plaque on repeated sigmoidoscopic examination and improvement of clinical symptoms after 9 days of medication.
Morphologic Study of Renal Arteries in Rats Fed High-salt Diet.
Won Hee Choi, Tae Sook Lee
Yeungnam Univ J Med. 1984;1(1):107-113.   Published online December 31, 1984
DOI: https://doi.org/10.12701/yujm.1984.1.1.107
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To evaluate the morphologic changes of the renal arteries in the condition of high-salt diet, we scheduled the control group which fed routine animal diet added 0.06% of Sodium chloride, low-salt group which fed with 2.0% of sodium chloride, and high-Salt group which fed with 8.0% of sodium chloride. The experimental animals were sacrificed every two weed until 20 weeks of final experimental week. The results obtained were as follow; 1. Slight intimal thickening of the renal arteries is observed from 16th experimental week and continued the end of the experiment in the rats of control group. 2. In low-salt group slight intimal thickening of the renal arteries is observed from 12th experimental week and continued to the end of the experiment. 3. In high-salt group the intimal thickening began from 6th experimental week and its degree was hasten with week, and provoked moderate to high degree of lesion at the end of the experiment. Medial proliferation and degeneration of the intima and media, though their quality is mild, also associated at the end of the experiment.

JYMS : Journal of Yeungnam Medical Science