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BACKGROUND Studies have claimed that in the surgical treatment of pancreas body and tail cancer, radical antegrade modular pancreatosplenectomy (RAMPS) is associated with effective tangential margin and extensive lymph node dissection. In the present study, the authors have compared the surgical outcomes between RAMPS and conventional distal(More)
BACKGROUND Although endoscopic resection can provide a wide tumor resection with a negative resection margin, it is not yet recommended as a curative therapy for ampulla of Vater cancer. METHODS To investigate the microinvasion rate and the diagnostic accuracy of endoscopic biopsy to properly judge the safety of endoscopic resection for ampulla of Vater(More)
—Multiobjective optimal power plant operation requires an optimal mapping between unit load demand and pressure set point in a fossil fuel power unit (FFPU). In general, the optimization problem with varying unit load demand cannot be solved using a fixed nonlinear mapping. This paper presents a modern heuristic method, particle swarm optimization (PSO), to(More)
The risk of locoregional recurrence in resected gastric adenocarcinoma is high, but the benefit of adjuvant treatment remains controversial. In particular, after extended lymph node dissection, the role of radiotherapy is questionable. Since 1995, we started a clinical protocol of adjuvant chemoradiotherapy after D2 gastrectomy and analysed the patterns of(More)
BACKGROUND The purpose of this study was to identify management strategies for non-functioning pancreatic neuroendocrine tumours (NF-PNETs) by analysis of surgical outcomes at a single institution. METHODS Archived records of patients with NF-PNETs who underwent surgery between 1994 and 2010 were reviewed. RESULTS Among 125 patients, the median tumour(More)
BACKGROUND/AIMS The authors conducted a hospital-based case-control study to evaluate the role of Clonorchis sinensis infection as a risk factor for the development of cholangiocarcinoma (CC), including extrahepatic CC, in Korea. METHODS Cases of 185 patients with CC (intrahepatic, 51; hilar, 53; and distal extrahepatic, 81) and matched controls underwent(More)
AIM To compare outcomes from radiofrequency ablation (RFA) and hepatectomy for treatment of colorectal liver metastasis (CRLM). METHODS From January 2000 to December 2009, 408 patients underwent curative intent treatment for CRLM. We excluded patients using the criteria: size of CRLM > 3 cm, number of CRLM ≥ 5, percutaneous RFA, follow-up period < 12 mo,(More)
BACKGROUND This study was to devise a prognostic model for metastatic gastric cancer patients undergoing first-line chemotherapy. PATIENTS AND METHODS A retrospective analysis was carried out on 1455 gastric cancer patients, who received first-line chemotherapy from September 1994 to February 2005. RESULTS At multivariate level, poor prognostic factors(More)
OBJECTIVES We reviewed the pancreatectomies that were done for pancreatic ductal adenocarcinoma to evaluate patient survival and prognostic predictors. METHODS A review was performed on 94 patients who underwent surgical resection for pancreatic ductal adenocarcinomas from 1995 to 2002. The perioperative factors were compared between the proximal and(More)
BACKGROUND There are scant studies that have analyzed the prognostic factors for malignant nonfunctioning endocrine tumors of the pancreas. We identified the predictive factors associated with long-term survival after surgical resection for malignant nonfunctioning endocrine tumors. METHODS Among the 25 patients seen at our hospital with a diagnosis of(More)