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109 results on '"Hyoung-Chul Oh"'

103. EUS-Guided Ethanol Lavage with Paclitaxel Injection (EUS-EP) for Cystic Tumors of the Pancreas: Follow-Up Study with Analysis of Response and Its Predictor

Author

Sung Koo Lee, Sang Soo Lee, Myung-Hwan Kim, Hyoung-Chul Oh, and Dong Wan Seo

Subjects
medicine.medical_specialty, medicine.anatomical_structure, business.industry, Gastroenterology, medicine, Follow up studies, Urology, Radiology, Nuclear Medicine and imaging, business, Pancreas, Paclitaxel Injection, Surgery
Published
2008
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104. The Usefulness of Percutaneous Transhepatic Cholangioscopy for Identifying Malignancies in Distal Commom Bile Duct Strictures

Author

Sang Soo Lee, Dong Wan Seo, Eun Hee Kim, Myung-Hwan Kim, Sung Koo Lee, Ju Young Jung, Saihui Kim, Hyun Joo Kim, Hyoung-Chul Oh, and Kwang Ha Lee

Subjects
Male, medicine.medical_specialty, Percutaneous, Cholangiopancreatography, Magnetic Resonance, Biopsy, Common Bile Duct Diseases, Common Bile Duct Neoplasms, Constriction, Pathologic, Sensitivity and Specificity, Endosonography, Distal Common Bile Duct, Cholangiography, medicine, Humans, Cholangioscopy, Endoscopy, Digestive System, Aged, Retrospective Studies, Common Bile Duct, Magnetic resonance cholangiopancreatography, Endoscopic retrograde cholangiopancreatography, Common bile duct, medicine.diagnostic_test, business.industry, General Medicine, Middle Aged, surgical procedures, operative, medicine.anatomical_structure, Original Article, Female, Radiology, Differential diagnosis, business, Stricture
Abstract

The diagnostic accuracy of percutaneous transhepatic cholangioscopy (PTCS) was compared to that of three radiologic modalities in distal common bile duct (CBD) strictures for the evaluation of clinical application. Ninety-five patients who underwent PTCS for the evaluation of distal CBD strictures (35 malignant and 60 benign) whose masses were not obvious from radiologic imagings were included. Confirmative diagnosis could not be reached by endoscopic retrograde cholangiopancreatography (ERCP) or radiologic findings in all cases. Specific findings on the computed tomography (CT), magnetic resonance cholangiopancreatography (MRCP) and direct cholangiography were analyzed among 68 (25 malignant and 43 benign) out of the 95 patients in order to determine the sensitivity and specificity of three radiologic studies for the diagnosis of malignant distal CBD strictures, and to compare those results with those by a combination of PTCS-guided biopsy and tumor vessel observation on cholangioscopy. The sensitivity/specificity of CT, MRCP and direct cholangiography including ERCP in diagnosing malignant distal CBD strictures were 42.9%/65.8%, 53.3%/58.3%, and 70.8%/47.6% respectively, while it was 96%/100% for the combination of PTCS-guided biopsy and tumor vessel. PTCS is a useful method for differential diagnosis of distal CBD strictures, particularly when it is difficult to distinguish benign from malignant strictures by radiologic studies and when peroral approach is not feasible.

Published
2008
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107. A Case of Idiopathic Chylothorax and Chyluria

Author

Tae Sun Shim, Hyoung Chul Oh, Jae Pil Yun, Jae Il Kim, Jung Min Choi, Won Dong Kim, Woo Sung Kim, Myung Zoon Yi, and Dong Soon Kim

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, A lipoprotein, business.industry, Chyluria, Pleural effusion, medicine.medical_treatment, Chylothorax, medicine.disease, Thoracic duct, Surgery, Infectious Diseases, medicine.anatomical_structure, Medicine, business, Urinary tract obstruction, Pleurodesis, Idiopathic chylothorax
Abstract

We report a rare case of idiopathic chylothorax and chyluria. A 31 year-old woman was referred to our hospital with a right-sided pleural effusion. Cream-colored pleural fluid and urine were confirmed as chylothorax and chyluria, respectively, by a lipoprotein electrophoresis. Even though she had previously underwent surgery for pelvic fibrosarcoma and experienced its recurrence, there has been no change of mass size and no evidence of thoracic duct or urinary tract obstruction as of the moment. Hence, idiopathic chylothorax and chyluira was diagnosed. Because she responded poorly to conservative treatment, thoracic duct ligation and pleurodesis were performend ; wherease chyluria was resolved spontaneously. (Tuberc Respir Dis 2004; 57:377-380)

Published
2004
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108. Hepatitis B Virus Infection and Intrahepatic Cholangiocarcinoma in Korea: A Case-Control Study.

Author

Lee, Tae Y., Lee, Sang S., Jung, Seok W., Jeon, Seong H., Sung-Cheol Yun, Hyoung-Chul Oh, Seunghyun Kwon, Lee, Sung K., Seo, Dong W., Myung-Hwan Kim, and Suh, Dong J.

Subjects
CHOLANGIOCARCINOMA, CANCER risk factors, HEPATITIS B, HEPATITIS C, DEMOGRAPHIC surveys, CIRRHOSIS of the liver
Abstract

OBJECTIVES: There is a wide variation in risk factors for intrahepatic cholangiocarcinoma (ICC) among various populations. Several studies have suggested that hepatitis C virus (HCV) infection may play a role in the development of ICC, whereas the role of hepatitis B virus (HBV) infection is less clear. METHODS: To determine whether HBV or HCV infection is a risk factor of ICC, we compared baseline demographic and clinical factors in 622 patients diagnosed between 2000 and 2004 with histologically confirmed ICC and 2,488 healthy controls, matched 4:1 with ICC patients for sex and year of birth. RESULTS: HBV infection (odds ratio [OR] 2.3, 95% confidence interval [CI] 1.6–3.3), but not HCV infection, was significantly related to ICC. Other significant risk factors for ICC included liver cirrhosis (OR 13.6), heavy alcohol consumption (OR 6.6), diabetes (OR 3.2), Clonorchis sinensis infection (OR 13.6), hepatolithiasis (OR 50.0), and choledochal cysts (OR 10.7). CONCLUSIONS: Our results indicate that development of ICC seems to be more closely related to HBV infection than to HCV infection in Korea, where both HBV and ICC are endemic. [ABSTRACT FROM AUTHOR]

Published
2008
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109. Cystic Lesions of the Pancreas: Challenging Issues in Clinical Practice.

Author

Hyoung-Chul Oh, Myung-Hwan Kim, Chang Yun Hwang, Tae Yoon Lee, Sang Soo Lee, Dong-Wan Seo, and Sung Koo Lee

Subjects
*MEDICAL research, *INTERNAL medicine, *PRECANCEROUS conditions, *PANCREAS, *HISTOPATHOLOGY
Abstract

Cystic lesions of the pancreas are being recognized with increasing frequency and have become a common finding in clinical practice. Cystic lesions of the pancreas display a wide spectrum of histopathology and biologic behavior. Differentiating among lesions and choosing an optimal therapy is challenging, and evidence-based guidelines for diagnosis, management, and follow-up for cystic lesions of the pancreas are needed. This review describes the epidemiology and typical features of cystic lesions of the pancreas, including a summary of commonly used descriptive terms, as well as the primary issues in the differential diagnosis and management of these lesions. [ABSTRACT FROM AUTHOR]

Published
2008
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