Can Endoscopic Ulcerations in Early Gastric Cancer Be Clearly Defined before Endoscopic Resection? A Survey among Endoscopists.

Background/aims: Early gastric cancer (EGC) with ulcerations can be treated via endoscopic resection (ER) when it is differentiated pathologically, limited to the mucosa, and <3 cm in diameter. The presence of ulceration is a key factor in deciding treatment strategies and is usually diagnosed during endoscopic examination. The aim of this study was to evaluate whether ulcerations in EGC can be clearly defined among endoscopists and which factors are related to the differences.

Diagnostic yield of endoscopic ultrasonography-guided single-incision needle knife biopsy for gastric subepithelial tumors: comparison with resected specimens.

Background: Several techniques are recommended for the histologic diagnosis of gastric subepithelial tumors (SETs). The purpose of our study was to evaluate the diagnostic yield and safety of endoscopic ultrasonography-guided single-incision needle knife (SINK) biopsy for the diagnosis of gastric SETs.

Methods: A retrospective review of patients who received biopsy for gastric SETs from August 2012 to May 2015 was conducted.

Perigastric Abscess as a Complication of Endoscopic Submucosal Dissection for Early Gastric Cancer: First Case Report.

Endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) is a widely accepted and well established procedure because of its curative potential and low invasiveness compared with surgery. Perforation is a potential major complication during ESD, and non-surgical treatments such as endoscopic closure with clips are sufficient in most cases. Here, we report a case of perigastric abscess that occurred as a complication of ESD for EGC.