Yoo-Seok Yoon

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OBJECTIVE The purpose of this study was to evaluate whether ampullectomy can substitute for pancreatoduodenectomy (PD) in early ampullary cancer by clinicopathologic study. SUMMARY BACKGROUND DATA Although ampullectomy has been attempted in early ampullary cancer (pTis, pT1), the indication and extent of resection have not been established. METHODS Of(More)
INTRODUCTION We report our experience with laparoscopic major liver resection in Korea based on a multicenter retrospective study. MATERIALS AND METHODS Data from 1,009 laparoscopic liver resections conducted from 2001 to 2011 were retrospectively collected. Twelve tertiary medical centers with specialized hepatic surgeons participated in this study. (More)
PURPOSE To assess the relationship between computed tomographic (CT) indexes and histologically measured pancreatic fat in surgical specimens and to evaluate patients with impaired glucose metabolism in a clinical setting. MATERIALS AND METHODS This retrospective study was institutional review board approved and informed consent was waived. The hospital(More)
BACKGROUND When a tumor is located in segment 4 (S4), it is preferable to perform only limited resection of S4, even in laparoscopic surgery. Here we describe anatomical laparoscopic S4, subdivision of S4 (S4a and S4b), and extended S4 segmentectomy for hepatocellular carcinoma (HCC), using the Glissonian pedicle transection method for each, and evaluate(More)
Despite it being a benign disease, a choledochal cyst must be removed with the gallbladder (GB) due to the risk of cancer in the biliary tract. Most patients are young females or children, all of whom express strong interest in the cosmetic results in addition to the complete resolution of their medical problems. Here, we introduce a laparoscopic management(More)
BACKGROUND Laparoscopic treatment for gallbladder cancer (GBC) has long been contraindicated, but few studies have demonstrated the oncologic outcomes of this treatment. The purpose of this study was to evaluate long-term survival after intended laparoscopic surgery for early-stage GBC based on our 10 years of experience. STUDY DESIGN Between May 2004 and(More)
BACKGROUND Laparoscopic liver resection is usually limited to the anterolateral segments of the liver (AL; Segments II, III, V, VI, and the inferior part of IV). We evaluated the feasibility of laparoscopic liver resection in the posterosuperior segments (PS; Segments I, VII, VIII, and the superior part of IV). METHOD We analyzed retrospectively the(More)
OBJECTIVE To determine the feasibility of the laparoscopic approach for treating suspected early-stage gallbladder carcinoma. DESIGN, SETTING, AND PATIENTS Prospective study from a university hospital. From May 10, 2004, to October 9, 2007, the laparoscopic approach was considered for treating 36 patients with suspected gallbladder carcinoma at T2 or less(More)
OBJECTIVES This study evaluated individual risks of malignancy and proposed a nomogram for predicting malignancy of branch duct type intraductal papillary mucinous neoplasms (BD-IPMNs) using the large database for IPMN. BACKGROUND Although consensus guidelines list several malignancy predicting factors in patients with BD-IPMN, those variables have(More)
Despite the increasing number of recent reports on laparoscopic liver resection in adults, there are only rare reports on such a procedure being performed in children. The authors report here on a total laparoscopic left lateral sectionectomy that was performed in a 5-year-old girl who had a cystic tumor of the liver. The operative time was 150 minutes, the(More)