Lower abdominal approach in laparoscopic cholecystectomy: A propensity score-matching analysis and prospective cohort study.

Background: Classic laparoscopic cholecystectomy) using multiple ports is a widely used method with excellent surgical outcomes. However, the resulting wounds do not meet the cosmetic needs of patients. Therefore, this study aimed to find a new minimally invasive surgical method for invisible wounds while maintaining surgical safety through a new port site.

Feasibility of using the homologous parietal peritoneum as a vascular substitute for venous reconstruction during abdominal surgery: An animal model.

Background: The interest in vascular substitutes has recently increased. We evaluated the feasibility of using a homologous parietal peritoneum as a vascular substitute for venous reconstruction during abdominal surgery.

Methods: The inferior vena cava was replaced with a homologous parietal peritoneum after cross-linking with glutaraldehyde in 36 rabbits.

Laparoscopic bile duct resection with lymph node dissection for gallbladder cancer diagnosed after laparoscopic cholecystectomy.

Introduction: Laparoscopic reoperation of postoperatively diagnosed gallbladder cancer is a technically challenging procedure due to inflammatory adhesion or fibrosis around the hepatoduodenal ligament and gallbladder bed [1,2]. Here we describe a technique for laparoscopic bile duct resection with lymph node dissection in a patient with cystic duct cancer diagnosed after laparoscopic cholecystectomy.

Video: A 73-year-old woman presented with postoperatively diagnosed gallbladder cancer.

Prognostic Impact of Intra-Ampullary Papillary-Tubular Neoplasm versus Flat Dysplasia as Precursor Lesions of Ampullary Adenocarcinoma.

Background: The aim of this study is to compare the prognostic impact of 2 precursor lesions of ampullary adenocarcinoma, intra-ampullary papillary-tubular neoplasm (IAPN) and flat dysplasia (FD).

Methods: From December 1994 to December 2012, a total of 359 patients underwent curative surgery for ampullary adenocarcinoma.

Results: The precursor lesions were IAPNs in 134 (37.

Long-term outcomes following en bloc resection for pancreatic ductal adenocarcinoma of the head with portomesenteric venous invasion.

Background: The aim of this study is to clarify the prognostic influence of venous resection of the portal vein (PV) or superior mesenteric vein (SMV) on long-term outcomes in patients with pancreatic ductal adenocarcinoma (PDAC) of the head with suspected vascular invasion.

Methods: From May 1995 to December 2014, a total of 557 patients underwent surgery with curative intent for pancreatic cancer of the head.

Results: Among 557 patients, 106 (19%) underwent pancreaticoduodenectomy (PD) with PV-SMV resection and 89 (75.

Long-term outcome of intraoperative radiofrequency ablation for hepatocellular carcinoma and its efficacy as a primary treatment.

Backgrounds/aims: We conducted this study to identify long-term outcomes following intraoperative radiofrequency ablation (IO-RFA) for hepatocellular carcinoma (HCC) and to reveal independent prognostic factors for survival.

Methods: From December 1998 to February 2019, 183 patients underwent IO-RFA for HCC. These patients were divided into two groups according to whether RFA was done as a first-line (1-RFA group, n=106) or secondary-line (2-RFA group, n=77) treatment.

Feasibility of Solo Single-Incision Laparoscopic Surgery in Non-anatomical Minor Liver Resection: a Propensity Score-Matched Analysis.

Background: We introduced solo surgery using a laparoscopic scope holder to wide an operator's activity range and reduce instrument crowding and clashing in single incisional surgery. This study aimed to compare the surgical outcomes of solo single-incision laparoscopic surgery (SILS) and conventional multiport laparoscopic surgery (MULS) for hepatocellular carcinoma (HCC).

Methods: Among 477 consecutive patients between January 2004 and December 2017, 214 patients were included.

Neoadjuvant therapy versus upfront surgery for borderline-resectable pancreatic cancer.

Background: Neoadjuvant therapy is recommended for patients with borderline-resectable pancreatic cancer (BRPC). In this study, we compare survival outcomes of neoadjuvant therapy with upfront surgery.

Methods: From January 2011 to June 2016, 1415 patients underwent treatments for pancreatic cancer in Samsung Medical Center.

Long-term clinical outcomes after endovascular management of ruptured pseudoaneurysm in patients undergoing pancreaticoduodenectomy.

Purpose: Recent studies have analyzed the short-term clinical outcomes of ndovascular management. However, the long-term outcomes are unknown. This study aimed to investigate clinical outcomes after endovascular management for ruptured pseudoaneurysm in patients after pancreaticoduodenectomy (PD).

Recurrence After Resection for Intraductal Papillary Neoplasm of Bile Duct (IPNB) According to Tumor Location.

Background: No studies have yet analyzed the characteristics of recurrence after resection for intraductal papillary neoplasm of bile duct (IPNB) based on tumor location. We analyzed the patterns, timing, and risk factors for recurrence.

Methods: From 1994 to 2014, data from 103 patients who were diagnosed with IPNB were retrospectively reviewed.

Current Status of Discarded Grafts in Korean Organ Transplantation.

Objectives: Despite the severe shortage of available organs, many are discarded after procurement. This study aims to analyze the current status of discarded organs (retrieved, but not transplanted organs) from deceased donors in Korea.

Methods: Deceased donor organ and procurement data were collected from the Korean Network for Organ Sharing and Korea Organ Donation Agency database from 2013 to 2016.

Nomogram for predicting postoperative pancreatic fistula.

Background: Previous studies analyzed risk factors for postoperative pancreatic fistula (POPF) and developed risk prediction tool using scoring system. However, no study has built a nomogram based on individual risk factors. This study aimed to evaluate individual risks of POPF and propose a nomogram for predicting POPF.

Can surgical treatment be justified for neuroendocrine carcinoma of the gallbladder?

Clinical features and treatment of GB neuroendocrine carcinoma (GB-NEC) are not well understood. This study aimed to analyze clinical outcomes of GB-NEC and verify the oncologic benefit of surgical treatment.From October 1994 to December 2014, the medical records of 31 patients with GB-NEC at a single center were retrospectively reviewed.

Clinical significance of revised microscopic positive resection margin status in ductal adenocarcinoma of pancreatic head.

Purpose: Recent studies have suggested microscopic positive resection margin should be revised according to the presence of tumor cells within 1mm of the margin surface in resected specimens of pancreatic cancer. However, the clinical meaning of this revised margin status for R1 resection margin was not fully clarified.

Methods: From July 2012 to December 2014, the medical records of 194 consecutive patients who underwent pancreaticoduodenectomy for ductal adenocarcinoma of the pancreatic head were analyzed retrospectively.

Comparison analysis of left-side versus right-side resection in bismuth type III hilar cholangiocarcinoma.

Backgrounds/aims: Several studies report worse prognosis after left-side compared to right-side liver resection in patients with perihilar cholangiocarcinoma. In this study, we compared outcomes of left-side and right-side resections for Bismuth type III hilar cholangiocarcinoma and analyzed factors affecting survival.

Methods: From May 1995 to December 2012, 179 patients underwent surgery at Samsung Medical Center for type III hilar cholangiocarcinoma.

Prognostic factors of non-functioning pancreatic neuroendocrine tumor revisited: The value of WHO 2010 classification.

Backgrounds/aims: Various factors have been reported as prognostic factors of non-functional pancreatic neuroendocrine tumors (NF-pNETs). There remains some controversy as to the factors which might actually serve to successfully prognosticate future manifestation and diagnosis of NF-pNETs. As well, consensus regarding management strategy has never been achieved.

Laparoscopic versus open distal pancreatectomy for nonfunctioning pancreatic neuroendocrine tumors: a large single-center study.

Background: Pancreatic neuroendocrine tumors (PNETs) account for 1-2% of all pancreatic neoplasms. Nonfunctioning PNETs (NF-PNETs) account for 60-90% of all PNETs. Laparoscopic distal pancreatectomy (LDP) is becoming the treatment of choice for benign lesions in the body and tail of the pancreas.

Actual long-term outcome of T1 and T2 pancreatic ductal adenocarcinoma after surgical resection.

Background: The prognosis for patients with pancreatic cancer is extremely poor. The diagnosis of pancreatic ductal adenocarcinoma at an early stage is uncommon. The purpose of this study was to analyze the clinicopathological characteristics of patients with pathologically proven pancreatic ductal adenocarcinoma following surgical resection and their actual 5 year survival rates, especially for those with T1 and T2 early stage cancer.

Laparoscopic left hepatectomy in patients with intrahepatic duct stones and recurrent pyogenic cholangitis.

Backgrounds/aims: Recently many studies have been reported the early results of a hepatectomy for various intrahepatic lesions. Also various types of laparoscopic hepatectomies are being performed in many centers. Some reports about the safety of laparoscopic parenchymal dissection of the liver have been published.