A method of "Noninjecting Resection using Bipolar Soft coagulation mode; NIRBS" for superficial non-ampullary duodenal epithelial tumor: a pilot study.

Background: Complete endoscopic resection of superficial non-ampullary duodenal epithelial tumors (SNADETs) is technically difficult, especially with an extremely high risk of adverse event (AE), although various endoscopic resection methods including endoscopic mucosal resection (EMR), underwater EMR (UEMR), and endoscopic submucosal dissection (ESD) have been tried for SNADETs. Accordingly, a novel simple resection method that can completely resect tumors with a low risk of AEs should be developed.

Aims: A resection method of Noninjecting Resection using Bipolar Soft coagulation mode (NIRBS) which has been reported to be effective and safe for colorectal lesions is adapted for SNADETs.

Efficacy of upadacitinib in the achievement of clinical and endoscopic remission in hospitalized patients with ulcerative colitis.

Janus kinase (JAK) inhibitors have been developed and are clinically available for management of active UC patients although most studies have been conducted for the outpatients and few studies have demonstrated its efficacy in endoscopic and histological remission of hospitalized patients with UC. The aim of the present study was to investigate the efficacy of upadacitinib, which is a novel selective JAK1 inhibitor, in the treatment of ulcerative colitis. We present the cases of three hospitalized patients with ulcerative colitis who achieved clinical remission after significant and rapid improvement with upadacitinib.

Evaluation of a new method, "non-injection resection using bipolar soft coagulation mode (NIRBS)", for colonic adenomatous lesions.

Background/aims: Endoscopic resection of all colorectal adenomatous lesions with a low complication rate, simplicity, and negative residuals is challenging. Hence, we developed a new method called "non-injection resection using bipolar soft coagulation mode (NIRBS)" method, adapted for colorectal lesions. In addition, we evaluated the effectiveness of this method.

Gastric hamartomatous inverted polyp: Report of three cases with a review of the endoscopic and clinicopathological features.

Objectives: A gastric hamartomatous inverted polyp (GHIP) is a rare submucosal tumor characterized histopathologically by a submucosal inverted proliferation of cystically dilated hyperplastic gastric glands. Only 42 GHIPs have been reported in English literature. Few GHIPs have been reported to accompany adenocarcinomas.

[A case of poorly differentiated pancreatic adenocarcinoma with spontaneous regression wherein retrospective rim enhancement findings were important for diagnosis].

A 66-year-old man with epigastric pain was admitted to our hospital for further evaluation of a pancreatic mass, as indicated on transabdominal ultrasonography performed by his family doctor. Using various imaging modalities, the 22-mm tumor was diagnosed as a cystic tumor with hemorrhagic necrosis. The tumor diameter reduced to 11mm over the course of 1 month.

Large Balloon Anchor Technique for Endoscopic Retrograde Cholangiopancreatography Required for Esophagogastroduodenal Deformities.

Objective It is difficult to insert a side-viewing duodenoscope during endoscopic retrograde cholangiopancreatography in patients with esophagogastroduodenal deformities. To evaluate the efficacy and safety of using a large balloon anchor technique for cases in which inserting side-viewing duodenoscopes is difficult. Methods We retrospectively examined patients with endoscopic retrograde cholangiopancreatography who required the large balloon anchor technique between April 2016 and October 2020.

Obstructive pancreatitis secondary to a pancreatic metastasis from lung cancer treated with nasopancreatic drainage.

A 44- and a 66-year-old woman underwent nasopancreatic drainage (NPD) to treat obstructive pancreatitis secondary to a pancreatic metastasis from lung cancer. Both patients were diagnosed with stage IV lung cancer and underwent chemotherapy for 17 and 15 months, respectively. Abdominal ultrasonography and computed tomography revealed a solid pancreatic tail tumor measuring 2.