Kazuhisa Uchiyama

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OBJECTIVE The aim of this study was designed to determine whether the period of drain insertion influences the incidence of postoperative complications. BACKGROUND DATA The significance of prophylactic drains after pancreatic head resection is still controversial. No report discusses the association of the period of drain insertion and postoperative(More)
OBJECTIVE To determine in a prospective randomized controlled trial (RCT) whether pylorus-resecting pancreatoduodenectomy (PrPD) with preservation of nearly the entire stomach reduces the incidence of delayed gastric emptying (DGE) compared with pylorus-preserving pancreatoduodenectomy (PpPD). BACKGROUND Several RCTs have compared PpPD and conventional(More)
OBJECTIVE To determine if an antecolic or a retrocolic duodenojejunostomy during pylorus-preserving pancreaticoduodenectomy (PpPD) was associated with the least incidence of delayed gastric emptying (DGE), in a prospective, randomized, controlled trial. SUMMARY BACKGROUND DATA The pathogenesis of DGE after PpPD has been speculated to be related to factors(More)
The efficacy and safety outcomes of laparoscopy-assisted distal gastrectomy (LADG) with D2 lymph node dissection for locally advanced gastric cancer remain unclear. Therefore, we conducted a randomized, controlled phase II trial to confirm the feasibility of LADG in terms of technical safety, and short-term surgical outcomes were investigated. Eligibility(More)
The role of laparoscopic surgery in management of transverse and descending colon cancer remains controversial. The aim of the present study is to investigate the short-term and oncologic long-term outcomes associated with laparoscopic surgery for transverse and descending colon cancer. This cohort study analyzed 245 patients (stage II disease, n = 70;(More)
Local adaptation is important in evolutionary processes and speciation. We used multiple tests to identify several candidate genes that may be involved in local adaptation from 1026 loci in 14 natural populations of Cryptomeria japonica, the most economically important forestry tree in Japan. We also studied the relationships between genotypes and(More)
BACKGROUND Laparoscopic gastrectomy has recently been gaining popularity as a treatment for cancer; however, little is known about the benefits of intracorporeal (IC) gastrointestinal anastomosis with pure laparoscopic distal gastrectomy (LDG) compared with extracorporeal (EC) anastomosis with laparoscopy-assisted distal gastrectomy (LADG). METHODS(More)
OBJECTIVE The impact of previous abdominal surgeries on the need for conversion to open surgery and on short-term outcomes during/after laparoscopic colectomy was retrospectively investigated. DESIGN This retrospective cohort study was conducted from December 1996 through December 2009. SETTING This study was conducted at Osaka Medical College Hospital.(More)
The incidence of aberrant bile duct injury associated with laparoscopic cholecystectomy (LC) has not yet been adequately examined. This study aimed to clarify the types of normal cystic ducts and the incidence of aberrant extrahepatic bile ducts, and to search for a method of avoiding injuries during LC. Aberrant hepatic ducts were retrospectively(More)
BACKGROUND The aim of the present study was to clarify the surgical outcome and long-term prognosis of laparoscopic liver resection (LLR) compared with conventional open liver resection (OLR) in patients with colorectal liver metastases (CRLM). METHODS A one-to-two propensity score matching (PSM) analysis was applied. Covariates (P < 0.2) used for PSM(More)