[A case of juvenile gastric polyposis with gastric cancer successfully treated by laparoscopic total gastrectomy -review of 36 reported cases in Japan].

A 43-year-old woman was suffering from epigastric pain. Her gastroscopy revealed polyposis of the stomach, and her biopsy revealed a hyperplastic polyp. During the 18-month follow-up, the polyps proliferated, and the patient was referred to our institute for further investigation and treatment.

Pembrolizumab-related cholangitis with multiple fatal liver abscesses after endoscopic biliary drainage: a case report and review of the literature.

A 60-year-old male with cStage IVB lung cancer was treated with pembrolizumab. However, after five courses of pembrolizumab, he developed pembrolizumab-related cholangitis. Imaging studies showed enlargement and diffuse wall thickening of the gallbladder and mild dilation of the bile ducts without any obvious obstruction.

New practical scoring system to predict post-endoscopic retrograde cholangiopancreatography pancreatitis: Development and validation.

Background And Aim: Post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) is the most serious adverse event of ERCP. Therefore, it is important to identify high-risk patients who require prophylactic measures. The aim of this study was to develop a practical prediction model for PEP that identifies high-risk patients.

Clinical outcome of conservatively managed pancreatic intraductal papillary mucinous neoplasms with mural nodules and main duct dilation.

Background: Surgical resection of intraductal papillary mucinous neoplasm (IPMN) is strongly recommended for patients exhibiting high-risk stigmata (HRS). However, determining surgical indications for elderly patients with comorbidities is challenging, as clinical outcomes are not well characterized. This multicenter observational study elucidated the clinical outcomes of patients with IPMN exhibiting HRS who did not undergo surgery.

[Pancreatic arteriovenous malformation perforated into the common bile and pancreatic ducts:a case report].

A 54-year-old man presented with melena and was conservatively monitored for duodenitis. He developed epigastric pain, and dynamic computed tomography revealed abnormal blood flow in the pancreatic head. The endoscopic retrograde cholangiography revealed that the common bile and pancreatic ducts were simultaneously enhanced, thereby indicating the perforation of an arteriovenous malformation into both ducts.

[Nonfunctioning pancreatic neuroendocrine tumor with extensive calcification].

A 54-year-old woman exhibited pancreatic calcification on abdominal ultrasonography. Diagnostic imaging revealed a 20-mm mass with a 12-mm calcification in the tail of the pancreas. The mass was weakly enhanced in the early phase of contrast-enhanced CT.

[Case with gradually enlarging lymphoepithelial cyst of the pancreas that necessitated enucleation].

A 54-year-old man exhibited a pancreatic mass on abdominal ultrasonography. Diagnostic imaging with endoscopic ultrasonography, computed tomography, and magnetic resonance imaging revealed that the mass comprised various internal structures and was not connected to the pancreatic duct. Over a period of 4 years and 2 months, the mass increased from 22mm to 32mm in diameter.

[A case of Cronkhite-Canada syndrome with multiple colon adenomas and early colon cancers].

A 60-year-old man presented with diarrhea and weight loss. Colonoscopy revealed multiple reddish polypoid lesions throughout the gastrointestinal tract and was diagnosed as Cronkhite-Canada syndrome (CCS). Prednisolone therapy caused regression of polyps.