Incidence of metachronous gastric cancer in patients whose primary gastric neoplasms were discovered after Helicobacter pylori eradication.

Background And Aims: The incidence of metachronous gastric cancer (MGC) in patients whose primary gastric neoplasm is discovered after Helicobacter pylori eradication remains unclear. Here, we evaluated the long-term effect of previous H pylori eradication on development of MGC after endoscopic submucosal dissection (ESD).

Methods: We analyzed prospectively collected data of consecutive patients with successful H pylori eradication more than 1 year before (eradicated group, 180 patients) or after (control group, 602 patients) initial curative ESD.

Comparison of diagnostic accuracies of various endoscopic examination techniques for evaluating the invasion depth of colorectal tumors.

This study was designed to assess the clinical value of magnifying endoscopy combined with EUS for estimating the invasion depth of colorectal tumors. We studied 168 colorectal adenomas and carcinomas that were sequentially examined by conventional endoscopy followed by magnifying endoscopy and EUS in the same session to evaluate invasion depth. Endoscopic images obtained by each technique were reassessed by 3 endoscopists to determine whether endoscopic resection (adenoma, mucosal cancer, or submucosal cancer with slight invasion) or colectomy (submucosal cancer with massive invasion or advanced cancer) was indicated.

Rectal granular-cell tumor difficult to distinguish from carcinoid tumor.

A 60-year-old man had a positive fecal occult-blood test on a medical check-up. Colonoscopy revealed a yellowish-white submucosal tumor 8 mm in diameter in the rectum. Endoscopic ultrasonography showed a well-demarcated mass with a homogeneous, low-level, internal echo in the second to third layers of the rectal wall.

[Single-balloon enteroscopy].

Double-balloon enteroscope (DBE) requires a long preparation time and scope insertion is often confused because balloons have to be attached to both the endoscope and the overtube. Single-balloon enteroscope (SBE) is a new model endoscope produced by Olympus Medical Systems, and SBE does not require a balloon to be attached to the scope and has only sliding tube. Therefore, examination, preparations and scope insertion are easier than with DBE.