Feasibility, safety and efficacy of endoscopic submucosal dissection for recurrent superficial rectal neoplastic lesions after transanal microsurgery.

Background And Aims: We aimed to evaluate the feasibility, safety and efficacy of endoscopic submucosal dissection for recurrent rectal neoplastic lesions after transanal microsurgery of superficial rectal neoplasms.

Methods: Multicenter retrospective study.

Main Outcomes: recurrence at first endoscopic follow-up, En bloc, R0 and curative resections.

Value of green sign and chicken skin aspects for detecting malignancy of colorectal neoplasia in a prospective characterization study.

Accurate endoscopic characterization of colorectal lesions is essential for predicting histology but is difficult even for experts. Simple criteria could help endoscopists to detect and predict malignancy. The aim of this study was to evaluate the value of the green sign and chicken skin aspects in detection of malignant colorectal neoplasia.

Impact of Annual Case Volume on Colorectal Endoscopic Submucosal Dissection Outcomes in a Large Prospective Cohort Study.

Introduction: The adoption of colorectal endoscopic submucosal dissection (ESD) is still limited in the West. A recent randomized trial showed that ESD is more effective and only slightly riskier than piecemeal endoscopic mucosal resection; reproducibility outside expert centers was questioned. We evaluated the results according to the annual case volume in a multicentric prospective cohort.