Clinicopathological characteristics of pancreatic ductal adenocarcinoma with invasive micropapillary carcinoma component with emphasis on the usefulness of PKCζ immunostaining for detection of reverse polarity.

Invasive micropapillary carcinoma (IMPC) is a rare distinct histopathological subtype, characterized by the presence of carcinoma cells displaying reverse polarity. Only limited clinicopathological information is available regarding pancreatic IMPC. The aim of the present study was to clarify the clinicopathological features of pancreatic IMPC and the usefulness of protein kinase C (PKC)ζ immunostaining for the detection of reverse polarity.

Bile Duct Stones Predict a Requirement for Cholecystectomy in Older Patients.

Background: The requirement for elective cholecystectomy in older patients is unclear. To determine predictors for requiring elective cholecystectomy in older patients, a prospective cohort study was performed.

Methods: All patients with gallstone disease who presented to our department from 2006 to 2018 were included if they met the following criteria: (1) age 75 years or older, (2) presentation for elective cholecystectomy, and (3) preoperative diagnosis of cholecystolithiasis.

Prognosis in Patients With Gallbladder Edema Misdiagnosed as Cholecystitis.

Background And Objectives: Edema of the gallbladder may pose a diagnostic challenge because it also occurs in patients without an indication for cholecystectomy.

Methods: We evaluated all consecutive patients with gallstone disease who presented for cholecystectomy at the Department of Surgery of Kansai Medical University from January 2006 to April 2019. Using the prospectively collected database in our department, we obtained information on patients whose final diagnoses were gallbladder edema.

Assessment of clinical outcome of cholecystectomy according to age in preparation for the "Silver Tsunami".

Background: Recent rapid increases in the aging population have created an impending "Silver Tsunami" in advanced countries. The overall prevalence of gallstone disease and its related complications will soon increase, and there will be a larger demand for gallbladder surgery.

Methods: We examined the outcomes of cholecystectomy according to age among patients with cholelithiasis to determine how a patient's age influences the outcome of cholecystectomy.

Clinicopathological and immunological features of follicular pancreatitis - a distinct disease entity characterised by Th17 activation.

Aim: Follicular pancreatitis is a recently recognised, distinct clinicopathological entity characterised by the presence of many intrapancreatic lymphoid follicles with reactive germinal centres. However, the clinicopathological and immunological features and causes have not yet been established. We assessed the clinicopathological and immunological profiles of patients with follicular pancreatitis who underwent surgery.

Does modified Blumgart anastomosis without intra-pancreatic ductal stenting reduce post-operative pancreatic fistula after pancreaticojejunostomy?

Background: Post-operative pancreatic fistula (POPF) is one of the most common and serious complications after pancreaticoduodenectomy (PD). The aim of this study is to retrospectively compare clinically relevant (CR) POPF and other complications after pacreaticojejunostomy (PJ) after modified Kakita (m-Kakita) or modified Blumgart (m-Blumgart) anastomoses without stenting in a single institution.

Methods: One hundred twenty-eight patients underwent PJ using m-Kakita anastomoses (two interrupted penetrating sutures) between January 2009 and December 2011.

Use of a piece of free omentum to prevent bile leakage after subtotal cholecystectomy.

Background: Bile leakage after subtotal cholecystectomy (SC) is clinically serious. To prevent such leakage, we developed a new surgical technique in which a free piece of omentum is plugged into the gallbladder stump (omentum plugging technique). We evaluated whether the omentum plugging technique prevents bile leakage after subtotal cholecystectomy.

Reappraisal of previously reported meta-analyses on antibiotic prophylaxis for low-risk laparoscopic cholecystectomy: an overview of systematic reviews.

Introduction: Many researchers have addressed overdosage and inappropriate use of antibiotics. Many meta-analyses have investigated antibiotic prophylaxis for low-risk laparoscopic cholecystectomy with the aim of reducing unnecessary antibiotic use. Most of these meta-analyses have concluded that prophylactic antibiotics are not required for low-risk laparoscopic cholecystectomies.

Comparison of surgical outcomes of three different stump closure techniques during distal pancreatectomy.

Background: To find the appropriate method of pancreatic transection during distal pancreatectomy (DP), we retrospectively compared post-operative complications including postoperative pancreatic fistula (POPF) according to the different types of pancreatic transection.

Methods: This study included 169 patients who underwent pancreatic transection using an ultrasonic activated device (USAD) with transfixion of the pancreatic duct (DP-TF group, n = 89), USAD followed by pancreaticogastrostomy (DP-PG group, n = 44), and a reinforced linear tristapler (DP-ST, n = 36).

Results: Overall and POPF-related complications in DP-PG group, and delayed gastric emptying (DGE) in DP-ST group were significantly lower than DP-TF group.

Survival benefit of intravenous and intraperitoneal paclitaxel with S-1 in pancreatic ductal adenocarcinoma patients with peritoneal metastasis: a retrospective study in a single institution.

Background: We evaluated the clinical efficacy of intravenous (i.v.) and intraperitoneal (i.

Evaluation of relative criteria for single-incision laparoscopic cholecystectomy.

Background/objective: Although single-incision laparoscopic cholecystectomy (SILC) has no advantage over conventional laparoscopic cholecystectomy (LC), except for better cosmesis, few reports have discussed the criteria for SILC. The aim of this study was to evaluate the suitability of our criteria for SILC.

Methods: During the study period, SILC was performed at our institution under the following criteria.

Risk factors for latent distant organ metastasis detected by staging laparoscopy in patients with radiologically defined locally advanced pancreatic ductal adenocarcinoma.

Objectives: We aimed to identify risk factors for latent distant organ metastasis in patients with radiographically defined locally advanced (RDLA) pancreatic ductal adenocarcinoma (PDAC).

Methods: RDLA disease was defined as unresectable disease without distant organ metastasis based on resectability status by NCCN guidelines. Between January 2005 and November 2015, 110 consecutive patients underwent staging laparoscopy to rule out latent distant metastasis.

Acute median arcuate ligament syndrome after pancreaticoduodenectomy.

Median arcuate ligament syndrome (MALS) has been reported in 2-7.6 % of patients undergoing pancreaticoduodenectomy (PD). Most of the reported cases of MALS have been diagnosed perioperatively and treated radiologically or surgically before or during PD.

Clinical outcomes of pancreatic ductal adenocarcinoma resection following neoadjuvant chemoradiation therapy vs. chemotherapy.

Purpose: We compared the clinical outcomes of pancreatic ductal adenocarcinoma (PDAC) resection after neoadjuvant chemoradiation therapy (NACRT) vs. chemotherapy (NAC).

Methods: The study population comprised 81 patients with UICC stage T3/4 PDAC, treated initially by NACRT with S-1 in 40 and by NAC with gemcitabine + S-1 in 41.

Alleviating Effect of Active Hexose Correlated Compound (AHCC) on Chemotherapy-Related Adverse Events in Patients with Unresectable Pancreatic Ductal Adenocarcinoma.

The present study was conducted to determine whether active hexose correlated compound (AHCC), a functional food extracted from cultured basidiomycetes, possesses the potential to attenuate adverse events in unresectable pancreas ductal adenocarcinoma (PDAC) patients receiving chemotherapy. Unresectable PDAC patients receiving gemcitabine treatment (GEM) as the first-line chemotherapy were prospectively divided into 2 groups according to AHCC intake (AHCC group, n = 35) or not (control group, n = 40). The patients in the AHCC group ingested 6.

A clinical role of staging laparoscopy in patients with radiographically defined locally advanced pancreatic ductal adenocarcinoma.

Background: The aim of current study is to verify usefulness of staging laparoscopy (stag-lap) for patient's selection and to find prognostic factors in patients with radiographically defined locally advanced (RD-LA) pancreatic ductal adenocarcinoma (PDAC).

Methods: The LA disease was defined as an unresectable disease without distant organ metastasis based on resectability status of NCCN guideline in this study. Stag-lap was performed in 67 patients with RD-LA (2007-2012) which were divided into 4 groups according to metastatic site: group CY (peritoneal fluid or washing cytology positive and without any distant organ metastasis); group P (peritoneal dissemination); group L (liver metastasis); group LA (peritoneal fluid or washing cytology negative and without any distant organ metastasis).

[OBJECTIVE ASSESSMENT OF POSTOPERATIVE PAIN AFTER DIGESTIVE TRACT SURGERY].

Pain is a sensation associated with subjective factors, making it difficult to measure and assess. Currently, there is no widely accepted method of objectively assessing pain, and therefore subjective assessments such as the Visual Analogue Scale (VAS) are generally used. The PainVision system has been developed for the quantitative analysis of pain and comparison of postoperative pain intensity.