Journal of Yeungnam Medical Science

Sung Hwa Bae

6 Articles

Oncology and Cancer Research
POEMS syndrome misdiagnosed as bone metastasis in a patient with thyroid cancer.: Sang Ah Baek, Hun Mo Ryoo, Sung Hwa Bae, Yoon Young Cho, Seong gyu Kim, Ga Young Kim, Min Keun Kim; Yeungnam Univ J Med. 2015;32(2):122-126. Published online December 31, 2015; DOI: https://doi.org/10.12701/yujm.2015.32.2.122

2,728 View
10 Download

Abstract PDF: Polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome is a monoclonal plasma cell disorder. Patients with POEMS syndrome also have various clinical manifestations including generalized edema, pleural effusion, ascites, papilledema, and sclerotic bone lesions. These manifestations can lead to a misdiagnosis or delayed diagnosis. We recently experienced a 51-year-old male patient with POEMS syndrome whose sclerotic bone lesion was misdiagnosed as malignant bone metastasis of papillary thyroid carcinoma. We reassessed the patient and found polyneuropathy, hepatosplenomegaly, hypothyroidism, partial hypopituitarism, immunoglobulin G lambda-type monoclonal gammopathy, hypertrichosis, ascites, and multiple sclerotic bone lesions, all of which led us to a diagnosis of POEMS syndrome. Treatment with thalidomide and dexamethasone resulted in clinical and radiological improvement. The patient has remained in remission after peripheral blood stem cell transplantation.

Hematology
Relapsed plasmacytoma in central nervous system after complete remission of extramedullary plasmacytoma.: Sun Mi Kang, Seong Gyu Kim, Ji Ho Seo, Ji Yoon Kim, Woo Jung Sung, Sung Hwa Bae, Hun Mo Ryoo; Yeungnam Univ J Med. 2014;31(1):43-47. Published online June 30, 2014; DOI: https://doi.org/10.12701/yujm.2014.31.1.43

2,147 View
4 Download

Abstract PDF: Extramedullary plasmacytoma (EMP) is a rare disease that occurs in 3% to 5% of patients with plasma cell disorder. It occurs most commonly in the upper respiratory tract and the oral cavity. Very few EMP cases have been reported in the central nervous system (CNS). We report herein an unusual case of EMP in the nasal cavity that recurred in the CNS without systemic involvement. A 67-year-old man visited our hospital due to a month-long bout with exophthalmos. He was diagnosed with EMP in the nasal cavity, paranasal sinus, and orbital cavity. He received radiotherapy to which he had complete responses. After 2 years, he visited our hospital because of a month-long headache. He was diagnosed with EMP recurrence in the CNS via brain magnetic resonance imaging and cerebrospinal fluid analysis. He was treated with whole brain radiotherapy and intrathecal chemotherapy with methotrexate, but he expired due to pneumonia.

Hematology
A Case of Essential Thrombocythemia Presenting as Esophageal Varix Bleeding and Multiple Thrombosis.: So Yeon Yoon, Jun Hyeok Choi, Sun Mi Kang, Jung Nam Cho, Sung Hwa Bae, Hun Mo Ryoo; Yeungnam Univ J Med. 2011;28(1):99-104. Published online June 30, 2011; DOI: https://doi.org/10.12701/yujm.2011.28.1.99

1,979 View
3 Download

Abstract PDF: Essential thrombocythemia (ET), a subcategory of chronic myeloproliferative disorder, is characterized by absolute thrombocytosis due to excessive clonal proliferation of platelets, hyperaggregability of platelets, and increased incidence of thrombosis and hemorrhage. We consider a diagnosis of ET when an unexplained and persistent thrombocytosis is observed. It is difficult to consider ET first when we meet a patient with esophageal varix bleeding or unusual multiple thromboses like mesenteric vein, splenic vein, and portal vein. This article reports a patient who presented initially with esophageal varix bleeding and unusual multiple thromboses, thereafter, she was diagnosed with ET after testing positive for the Janus Tyrosine Kinase 2 (JAK2) V617F mutation. In conclusion, in patients with varix bleeding and unusual multiple thromboses, myeloproliferative disorders like essential thrombocythemia should be considered as a potential cause and testing for the JAK2 mutation is warranted.

Oncology and Cancer Research
Early or Late Gefitinib, Which is Better for Survival?: Retrospective Analysis of 228 Korean Patients with Advanced or Metastatic NSCLC.: Dong Gun Kim, Min Kyoung Kim, Sung Hwa Bae, Sung Ae Koh, Sung Woo Park, Hyun Je Kim, Myung Jin Kim, Hyo Jin Jang, Kyung Hee Lee, Kwan Ho Lee, Jin Hong Chung, Kyung Chul Shin, Hun Mo Ryoo, Myung Soo Hyun; Yeungnam Univ J Med. 2011;28(1):31-44. Published online June 30, 2011; DOI: https://doi.org/10.12701/yujm.2011.28.1.31

1,983 View
2 Download

Abstract PDF: BACKGROUND
The optimal timing of treatment with EGFR-tyrosine kinase inhibitors (EGFR-TKI) in NSCLC patients has not yet been determined. METHODS: We separated 228 patients with advanced/metastatic NSCLC treated with gefitinib into an early gefitinib group (patients who received gefitinib as first- or second-line treatment) and a delayed gefitinib group (patients who received gefitinib as third or fourth-line treatment) and attempted to determine whether the timing of gefitinib treatment affected clinical outcomes. RESULTS: Median overall survival (OS), progression free survival (PFS), and median OS from first-line treatment of advanced/metastatic disease (OSt) for 111 patients in the early gefitinib group were 6.2 months, 3.3 months, and 11.6 months. However, median OS, PFS, and OSt for 84 patients in the delayed gefitinib group were 7.8 months, 2.3 months, and 22.7 months. No differences in OS and PFS were observed between the 2 groups. However, OSt was significantly longer in the delayed gefitnib group. Timing of gefitinib therapy was one of the independent predictors of OSt. Hb > or = 10 g/dl, and having never smoked, and ECOG performance status < or =1 were independent predictors of better PFS. CONCLUSION: Deferral of gefitinib therapy in patients with advanced or metastatic NSCLC may be preferable if they are able to tolerate chemotherapy.

Hematology
Comparative Study on the Infection Rates of Protected Environment versus Non-Protected Environment in Acute Myeloid Leukemia during Remission Induction Chemotherapy.: Se Hoon Sohn, Ha young Lee, Dong Geun Kim, Sung Woo Park, Myung Jin Kim, Myung Jin Oh, Hye Deok Woo, Hun Mo Ryoo, Sung Hwa Bae, Kyung Hee Lee, Min Kyoung Kim, Myung Soo Hyun; Yeungnam Univ J Med. 2010;27(2):113-121. Published online December 31, 2010; DOI: https://doi.org/10.12701/yujm.2010.27.2.113

2,237 View
6 Download

Abstract PDF: BACKGROUND
AND PURPOSE: Patients with acute leukemia experience prolonged periods of neutropenia due to their disease or its treatment. For this reason, they often develop serious infectious complications. Although antibiotic therapy has improved in recent years, the fatality rate from infection remains high. For the control of infection, protected environment was developed. But because of economic issue, most of chemotherapy with acute myeloid leukemia have conducted in non-protected environment. So this study compared the rate of complete remission, days with neutropenia, rate of fever, rate of positive culture, rate of overt infection and use of antibacterial and antifungal agents with patients within non-protected environment and protected environment, retrospectively. Patients with acute myeloid leukemia during first remission induction chemotherapy were eligible for this study. METHODS: Retrospective analysis was conducted between patients in non-protected (25 patients) and protected environment (14 patients) with acute myeloid leukemia during remission induction chemotherapy. RESULTS: Rate of overt infection, rate of fever, rate of positive culture and rate of use of antibiotics were significantly high in patients within non-protected environment compared with patients within protected environment. There were no differences in rate of complete remission and days of neutropenia. CONCLUSIONS: This study suggests protected environment for patients with acute myeloid leukemia during remission induction chemotherapy could reduce rate of overt infection, and rate of use of antibiotics.

Nephrology
The Characteristics of Blood Pressure Control in Chronic Renal Failure Patients Treated with Peritoneal Dialysis.: Hang Jae Jung, Sung Hwa Bae, Jun Bum Park, Kyoo Hyang Jo, Young Jin Kim, Jun Young Do, Kyung Woo Yoon; Yeungnam Univ J Med. 1999;16(2):333-341. Published online December 31, 1999; DOI: https://doi.org/10.12701/yujm.1999.16.2.333

1,795 View
1 Download

Abstract PDF: BACKGROUND
AND METHODS: In order to evaluate characteristics and modulatory factors of blood pressure in peritoneal dialysis(PD), studies were conducted on the 69 patients who had underwent peritoneal equilibration test(PET). RESULTS: The results were as follows: 1) All patients received an antihypertensive drug before PD, but, 15 of 69 patients successfully quit taking the antihypertensive drug after peritoneal dialysis. 2) During peritoneal dialysis, mean arterial pressure(MAP) was significantlydecreased for the first 3 months, and this lasted for 1 year, and antihypertensive drug requirements were significantly decreased continuously up to 9 months(p<0.005). 3) After changing the modality from hemodialysis to peritoneal dialysis. MAP(mmHg, from 107.1+/-4.5 to 98.6+/-8.8, p<0.05), antihypertensive drug requirements(from 5.6+/-2.6, to 2.0+/-2.5, p<0.01) and erythropoietin dosages(Uint/week, from 4600+/-2660 to 2000+/-1630, p<0.05) were decreased. 4) Multiple logistic regression analysis showed that MAP(p<0.01) and daily ultrafiltration volume(p<0.05) can contribute to the determination of antihypertensive drug requirements. However the relationship between antihypertensive drug requirements and PET results or dialysis adequacy indices(weekly Kt/V. weekly creatinine clearance) was not revealed. CONCLUSION: In conclusion, the prescription of antihypertensive drugs should be considered according to daily ultrafiltration volume, especially during first year after initiating PD, and follow-ups for over a year may be needed.

Author index