Efficacy and safety of endoscopic ultrasound-guided gallbladder drainage without dilation by using a 0.035-inch stiff guidewire.

Endoscopic ultrasound-guided gallbladder drainage for patients with cholecystitis and high surgical risk is commonly performed by dilating the fistula before inserting the delivery sheath; however, this carries an increased risk of peritonitis. To overcome this problem, we developed a new technique that did not require dilation, using a 0.035-inch stiff guidewire, and retrospectively evaluated the efficacy and safety of this technique.

Tissue acquisition for comprehensive genomic profiling of gallbladder cancer using a forward-viewing echoendoscope in a patient who underwent Roux-en-Y reconstruction.

A 50-year-old man with a history of total gastrectomy, distal pancreatectomy, splenectomy, and Roux-en-Y reconstruction was admitted to our hospital with a gallbladder tumor that had infiltrated the liver and abdominal wall. Because malignant cells were not collected during the percutaneous biopsy, we planned to perform an endoscopic ultrasound-guided fine-needle biopsy with a 22-G Franseen needle using a forward-viewing echoendoscope. Using intermittent manual compression, the forward-viewing echoendoscope reached the duodenum under fluoroscopic guidance.

Clinical factors associated with acute abdominal symptoms induced by gastric anisakiasis: a multicenter retrospective cohort study.

Background: Gastric anisakiasis typically causes severe abdominal symptoms; however, we incidentally detected asymptomatic gastric anisakiasis cases during esophagogastroduodenoscopy. The factors associated with developing acute abdominal symptoms induced by gastric anisakiasis remain unclear. Therefore, this study aimed to investigate the clinical factors associated with abdominal symptoms of gastric anisakiasis by comparing symptomatic and asymptomatic cases.

[Good's syndrome developing hemophagocytic lymphohistiocytosis following thymectomy].

This report presents the case of a 68-year-old female patient previously diagnosed with thymoma by her local doctor. She was referred to our hospital for surgery, and the thymoma was removed and diagnosed as a World Health Organization (WHO) classification type AB thymoma. After surgery, she experienced general malaise, a loss of appetite, and weight loss, so she visited our hospital in May 2019.

Endocuff-Assisted versus Cap-Assisted Colonoscopy Performed by Trainees: A Retrospective Study.

Background/aims: The adenoma detection rate (ADR) of screening colonoscopies performed by trainees is often lower than that of colonoscopies performed by experts. The effcacy of cap-assisted colonoscopy (CAC) in adenoma detection is well documented, especially that of CACs performed by trainees. Endocuff, a new endoscopic cap, is reportedly useful for adenoma detection; however, no trials have compared the effcacy of Endocuff-assisted colonoscopy (EAC) and CAC conducted by trainees.

Natural History of Pancreatic Ductal Adenocarcinoma Diagnosed During Observation of Other Organ Cancers.

BACKGROUND Pancreatic ductal adenocarcinoma (PDAC) is a rapidly progressive malignancy that exhibits an extremely poor prognosis, with most cases diagnosed at an advanced stage. To date, few reports have explored the natural history of PDAC, and the period leading up to the detection of PDAC as a tumor with contrast-enhanced computed tomography (CECT) remains unclear. Here, we report 3 PDAC cases diagnosed incidentally by repeating imaging examinations during observation of other organ cancers.

Atypical presentation of a cushion sign-positive stomach gastrointestinal stromal tumor with cystic formation: A case report.

Gastrointestinal stromal tumors (GIST) typically appear as solid masses, and cystic formation is uncommon. Most stomach GISTs with cystic formation progress outside the gastric wall and are frequently misdiagnosed as epigastric cystic tumors derived from pancreas or liver. An asymptomatic 72-year-old male underwent esophagogastroduodenoscopy, which revealed a submucosal tumor (SMT), approximately 50 mm in diameter, at the anterior wall of the gastric angle.