A retrospective study on endoscopic missing diagnosis of colorectal polyp and its related factors.

Background/aims: To investigate missing diagnosis of the polyp by colonoscopy, and to reveal the endoscopic, pathological features of missed polyps and related factors inducing missing diagnosis.

Materials And Methods: We reviewed the data of the patients who received colonoscopy twice within 180 days. The missing rate of the colorectal polyps ware calculated and the endoscopic and pathological features of the missed polyps were summarized.

The accumulating appreciation of endoscopic submucosal dissection in the treatment of gastrointestinal neoplasms: preliminary experience in local eastern China.

Background/aims: Endoscopic submucosal dissection (ESD), an emerging technique originated from Japan, has been introduced into China in recent years. The aim of this study was to evaluate the efficacy and safety of ESD in the treatment of gastrointestinal (GI) neoplasms.

Methodology: Early GI neoplasms (n=41) in 40 patients from local Eastern China were treated with ESD at Zhejiang Provincial People's Hospital and followed-up from January 2009 to December 2011.

Narrow-band imaging endoscopy with and without magnification in diagnosis of colorectal neoplasia.

Aim: To evaluate the diagnostic efficacies of narrow-band imaging (NBI) endoscopy with and without high magnification in distinguishing neoplasia from non-neoplasia colorectal lesions.

Methods: A total of 118 patients with 123 colorectal lesions examined by NBI endoscopy in the Zhejiang Provincial People's Hospital from September 2008 to April 2010 were enrolled in this study. These lesions were classified by pit pattern and capillary pattern, and then assessed by histopathology.