Journal of Yeungnam Medical Science

Jae Woon Kim

9 Articles

Dynamic CT Finding of Pelioid HCC; Case Report.: Rak Chae Son, Jae Woon Kim, Jae Chun Chang; Yeungnam Univ J Med. 2010;27(2):146-149. Published online December 31, 2010; DOI: https://doi.org/10.12701/yujm.2010.27.2.146

1,495 View
3 Download

Abstract PDF: Pelioid hepatocellular carcinoma (HCC), a type of atypical HCC, is a rare histologic type of HCC. The radiologic findings of the pelioid HCC is differ from the typical type of HCC. To our knowledge, this case report is the second literature to show the enhancing features of a pelioid HCC on dynamic computed tomography (CT). Here we describe the dynamic CT findings in a case of surgically confirmed pelioid HCC.

Nonsegmental Abnormal Arterial Attenuation : Transient Hyperperfusion of the Peripheral Zone of the Liver on Arterial Dominant Phase: Won Kyu Park, Jay Chun Chang, Jae Woon Kim; Yeungnam Univ J Med. 2007;24(2 Suppl):S310-318. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S310

1,139 View
2 Download

Abstract PDF: Purpose：This study was done to arrange the cases showing temporally hyperperfusion in the periphery of the liver, to check the etiology and mechanism, and to find out the new radiologic role on diffuse liver disease. Materials and Methods：We reviewed 12 cases of showing transient arterial hyperperfusion in the just peripheral portion of the liver on the arterial dominant phase on dynamic CT and the absence of abnormal perfusion between central and peripheral portion on tissue equilibrium phase. We retrospectively analyzed final diagnosis and the presence of main portal vein thrombi, and cavernous transformation.
Results
：Final diagnosis in 12 cases was as follows: diffuse liver disease was in seven cases, pancreatitis in three and pyogenic portal thrombosis in two. Main portal vein thrombosis were detected all cases of pancreatitis and pyogenic portal thrombosis. In seven diffuse liver disease, two cases shown thrombosed, two cases shown normal and the other cases are collapsed. Cavernous transformation was in three cases of pancreatitis and two of diffuse liver disease.
Conclusion
：We think that the causes of this phenomenon maybe as follows: the difference of the hemodynamic compensation mechanism between central and peripheral zone of the liver, presence of microscopic thrombi in peripheral portal branch which cannot be detected by imaging technique, hypercoagulability in portal area, the systematic destruction of terminal portal branch and the development of ectopic portal pathway.

A Case of Reversed Intestinal Rotation: Won Kyu Park, Jae Ho Cho, Jay Chun Chang, Jae Woon Kim, Mi Soo Hwang; Yeungnam Univ J Med. 2007;24(2 Suppl):S632-635. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S632

1,196 View
1 Download

Abstract PDF: Diagnosis and treatment of a patient with a congenital anomaly of the midgut with persistent symptom in adult can be difficult because it is particularly in adults. Reversed rotation of the midgut is the rarest of all malrotation anomalies. We report a case of reversed intestinal rotation and review the embryology, clinical presentation, and radiographic findings of this disorder. Although this anomaly is rare, it may be diagnosed by the knowledge of embryology and anatomy.

Cystic Dystrophy in Heterotopic Pancreas of Duodenal Wall －A Case Report－: Mi Jin Gu, Won Kyu Park, Yeung Kyong Bae, Jae Ho Cho, Jay Chun Chang, Jae Woon Kim, Kil Ho Cho, Mi Soo Hwang, Bok Hwan Park, Joon Hyuk Choi; Yeungnam Univ J Med. 2007;24(2 Suppl):S647-651. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S647

1,047 View
2 Download

Abstract PDF: Cystic dystrophy is an uncommon, benign poorly understood disease. It is characterized by the development of cysts in heterotopic pancreatic tissue. A 57-year-old-man was hospitalized for abdominal pain for a week. He is a heavy alcohol drinker. There was a cyst at second portion of duodenum on CT. Under the impression of peptic ulcer perforation, Whipple’s operation was performed. Grossly, a cystic space, measuring 3.0 cm in diameter, was noted within the thickened duodenal wall. Microscopically, the cyst was lined by columnar epithelium and granulation tissue and embedded in ectopic pancreatic tissue. The adjacent pancreatic tissue showed focal chronic pancreatitis.

Percutaneous Nephrostomy Using 18 Guage Puncture Needle.: Jae Woon Kim, Jin Woo Kim, Jae Ho Cho, Jae Chun Chang, Bok Hwan Park; Yeungnam Univ J Med. 1998;15(1):159-163. Published online June 30, 1998; DOI: https://doi.org/10.12701/yujm.1998.15.1.159

1,348 View
1 Download

Abstract PDF: Percutaneous nephrostomy was performed using 18 guage pucture needle under ultrasonic guidance in 58 patients, 98 cases with hydronephrosis (bilateral; 15 cases, repeat nephrostomy; 25 cases). The causes of the hydronephrosis were malignancy(33 patients, 65 cases), benign diseases(18 patients, 25 cases), and unknown causes(seven patients, eight cases). Successful nephrostomy was achieved in all cases. Major complication was not found, but seven(7.1%) minor complications, such as gross hematuria(four cases), perirenal urine leakage(two cases), and fever(one cases) were developed. The complication rate in our study was similar to that of other studies using 21 guage puncture needle. In conclusion, we think that the percutaneous nephrostomy using 18 guage puncture needle is a simple, safe, and cost and time effective procedure and it can replace the method using 21 guage puncture needle.

Radiologic Findings of Uncommon Breast Cancer.: Jae Woon Kim, Jae Hong An, Mi Soo Hwang, Jae Kyo Lee, Woo Mok Byun; Yeungnam Univ J Med. 1998;15(1):114-124. Published online June 30, 1998; DOI: https://doi.org/10.12701/yujm.1998.15.1.114

1,462 View
2 Download

Abstract PDF: We analyzed the mammographic (n=21) findings (location, margin, shape, cluster microcalcifications, size, multiplicity) and ultrasonographic (n=12) findings (shape, border, internal echo, boundary echo, posterior echo, lateral echo, width/depth ratio) to evaluate specific radiologic findings of histopathologically proved uncommon breast cancer. The mammographic findings (n=21) are as follow; 1) single; 16, multiple; 5 2) margin (smooth; 13, irregular; 4, spiculated; 4) 3) shape (round and ovoid; 9, lobulated; 8, irregular; 4) 4) cluster microcalcifications (abscent; 20, present; 1) 5) size (1-3cm; 18, 3-5cm; 2, 5cm> ; 1) 6) location (UOQ; 13, UIQ; 4, LIQ; 3, LOQ; 1). The ultrasonographic findings (n=12) are as follow; 1) shape (round to oval; 5, lobulated; 5, irregular; 2) 2) border (smooth even; 9, rough uneven; 3) 3) internal echo (fine homogeneous; 5, coarse heterogeneous; 7) 4) boundary echo (regular fine; 4, irregular thick; 8) 5) posterior echo (enhanced; 11, no change; 1) 6) lateral echo (marked; 7, nonexistent; 5) 7) width/depth ratio (1.5> 1, 1.0-1.5; 7, 1.0< ; 4). Uncommon breast cancer show benign nature on mammogram, but malignant nature on ultrasonogram (especially boundary echo, internal echo, width/depth ratio)

Significance of the AFP Level and HBsAg in Differentiation of Hepatic Masses.: Jae Woon Kim, Won Kyu Park, Jae Ho Cho, Jae Chun Chang, Bok Hwan Park; Yeungnam Univ J Med. 1996;13(2):302-307. Published online December 31, 1996; DOI: https://doi.org/10.12701/yujm.1996.13.2.302

1,351 View
2 Download

Abstract PDF: Hepatic masses show different enhancing patterns in N bolus computed tomography: Hepatocellular carcinoma shows high-attenuation in the early enhancing phase and low-attenuation in the late enhancing phase, hemangioma shows peripheral dot-like high-attenuation in the early enhancing phase and central high-attenuation in the late enhancing phase, and metastatic cancer and cholangiocelluar carcinoma show peripheral high-attenuation rim in the early enhancing phase and central portion gradulally high attenuation in the late enhancing phase. but sometimes enhancing patterns of the hepatic masses are confuse. To evaluate the significance of the AFP level and HBsAg in differentiation of the hepatic masses, we retrospectively analyzed AFP level and HBsAg' in 228 pathologically or radiologically confirmed hepatocellular carcinomas, and 137 pathologically nonhepatocellular cacinomas. The results were as follows In hepatocellular carcinoma, AFP level above 20ng/ml was 77.8% and HBsAg positve was 72.6%. In nonhepatocellular carcinoma, AFP level above 20ng/ml was 3.7% and HBsAg positve was 16.1%. We concluded that AFP level and HBsAg are helpful to distinguish hepatocellular carcinoma from nonhepatocellular carcinoma, when IV bolus computed tomogram finding is uncertain.

Use of Sonography in the Differential Diagnosis between Phylloides Tumor and Giant Fibroadenoma.: Jong Oh Choi, Jae Woon Kim, Won Kyu Park, Mi Soo Hwang, Bok Hwan Park; Yeungnam Univ J Med. 1996;13(2):295-301. Published online December 31, 1996; DOI: https://doi.org/10.12701/yujm.1996.13.2.295

1,470 View
1 Download

Abstract PDF: Phylloides tumor is very similar to giant fibroadenoma in that they have benign appearance in breast radiologic image. Fibroadenoma has no malignant potential, but phylloides tumor is locally recurrent, invasive and may occasionally metastasize. It thus appears that evaluation of the differential point of the two tumor groups by radiologic study is very important. We retrospectively compared sonographic find;.ngs of 6 cases of phylloides tumor with those of 4 cases of fibroadenoma, which proved pathologically in Ye mgnam University Hospital from 1984 to 1986. The mean age of the patients were 31.8 years old(from 14 to 41 years old) in phylloides tumor and 28.8 years old (from 17 to 40 years old) in giant fibroadenoma, respectively. The viewpoints of this analysis were size, shape and contour of the masses, internal echo pattern, posterior enhancement, and especially the existence of peripheral cyst or septal band echo. We found that diffenentiation of these two tumors by sonography was difficult. But peripheral cyst was found only in phylloides tumor and septal band echo was found largely in giant fibroadenoma. Although the existence of peripheral cyst or septal band echo in the breast mass was not pathognomonic findings, we suggest that the existence of septal band echo is preferential finding to fibroadenoma, and peripheral cyst is preferential finding to phylloides tumor.

Neuroblastoma : Computed Tomographic Finding.: Jae Woon Kim, Jong Oh Choi, Jae Ho Cho, Mi Soo Hwang, Bok Hwan Park; Yeungnam Univ J Med. 1996;13(1):134-140. Published online June 30, 1996; DOI: https://doi.org/10.12701/yujm.1996.13.1.134

1,441 View
1 Download

Abstract PDF: Recently many studies have shown the usefulness of computed tomogram in diagnosing abdominal mass when clinical and conventional radiologic examinations fail to reveal the nature of abdominal mass or the cause of abdominal distension. To evaluate the usefulness of CT in diagnosing neuroblastoma, we retrospectively analyzed computed tomographic findings of 16 neuroblastoma patients, who pathologically proved in Yeungnam University Hospital from 1986 to 1995. The age range of the patients studied were from 8months to 18years. The most frequent sith of origin was adrenal gland and the next was retroperitioneum. The presenting symptoms were palpable mass, abdominal distension, and abdominal pain.- The viewpoints of this analysis were tumoral calcifications, midline cross, shape, margin, internal structure, contrast enhancement patterns, major vessel involvement, and lymph node involvement. ':haracteristic CT findings were 'as follows: Fine dense curvillinear calcification within the tumor(56%), midline cross(50%), lobulation(75%), well-circumscribed margin(56%), cystic degeneration(56%), heterogeneous contrast enhancement(690/o), encasement of major vessels such as aorta, IVC and celiac trunk(50%), and paraaortic lymphadenopathy(87%). We conclude that these CT findings were very common and could be helpful in diagnosting and differentiation neuroblastoma in infant and children.

Author index