Pronostic Score of Morbidity to Determine Risk of Complications After Endoscopic Submucosal Dissection for Colorectal Lesions

The mains complications in colo-rectal dissection are the pain, the delayed bleeding and the perforation and represent around 10%. Currently, the procedure is realized during a hospitalization with not real recommendation about the time of this. There is currently no score established for the colo-rectal endoscopic submucosal dissection. * To develop clinical or mixed prognostic score after endoscopic subcostal dissection for colorectal lesions in Nancy's hospital. * Allow to obtain an estimation of number of patients required for a larger study.