Jae Chul Hwang

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BACKGROUND/AIMS Endoscopic resection for pathologic diagnosis and complete eradication of subepithelial tumors (SETs) has offered less invasive alternatives to surgical resection. The aim of this study is to evaluate feasibility of endoscopic resection for the treatment of gastric SETs originated from the muscularis propria layer and to determine related(More)
BACKGROUND The placement of self-expandable metallic stents (SEMS) is known to be effective palliative treatment of malignant gastroduodenal obstruction. There are two types of SEMS--covered and uncovered--each with its own advantages and disadvantages. This study was conducted to compare between the clinical outcomes of covered and uncovered stents in(More)
The natural course of hepatitis B virus (HBV) infection is likely related to host immune factors. Interleukin-18 (IL-18) plays a significant role in immune defense. This study was undertaken to determine the association between the presence of hepatocellular carcinoma (HCC) and single-nucleotide polymorphisms (SNPs) in the IL-18 gene in HBV-infected(More)
Gastric adenoma with low-grade dysplasia (LGD) is a less progressive disease than with high-grade dysplasia; nevertheless, a certain portion of lesions can progress. The purpose of this study was to evaluate the effectiveness of argon plasma coagulation (APC) with submucosa saline injections (APC–SSI) for gastric adenoma with LGD on an outpatient department(More)
OBJECTIVE Although still controversial, bilateral stenting may be the best option for palliative drainage of malignant hilar biliary obstruction. The aim of our study was to evaluate the technical and clinical efficacies of endoscopic bilateral metal stenting using a biliary Y-stent for the management of malignant hilar obstruction. MATERIAL AND METHODS(More)
The role of specific pathological findings in the upper gastrointestinal tract in chronic renal failure remains uncertain. Most of the studies were conducted in the West, and the number of subjects was small. We have tried to look at that problem in Taiwan. Endoscopy to evaluate the source of upper gastrointestinal hemorrhage was performed in 698 patients(More)
BACKGROUND AND STUDY AIMS Endoscopists sometimes face paradoxical cases in which the endoscopic submucosal dissection (ESD) specimen reveals a non-neoplastic pathology result. The aims of the study were to determine the reasons for such results, and to compare the endoscopic characteristics of non-neoplastic and conventional neoplastic pathology groups(More)
BACKGROUND Biopsy needles have recently been developed to obtain both cytological and histological specimens during endoscopic ultrasound (EUS). We conducted this study to compare 22-gauge (G) fine needle aspiration (FNA) needles, which have been the most frequently used, and new 25G fine needle biopsy (FNB) needles for EUS-guided sampling of solid(More)
Endoscopic submucosal dissection (ESD) enables en bloc resection of larger gastric neoplasms. However, the procedure is associated with a high incidence of perforation. Perforations during ESD are divided into macro- and microperforations. Although both types of perforations could cause widespread tissue injury and secondary sepsis, very little is known(More)
BACKGROUND Insertion of self-expandable metallic stents (SEMS) can provide rapid relief of malignant colorectal obstruction and can be used as a palliative treatment or as a bridge to surgery. A SEMS can be classified as an uncovered or covered stent. Both types of stents have their own merits and demerits. OBJECTIVE The objectives of this study were to(More)