Dataset Information

Endoscopic submucosal dissection for treatment of advanced colorectal neoplasia

ABSTRACT: Interventions: Group 1: Patients to be included will have flat or sessile colorectal neoplasia > 20mm amenable to endoscopic treatment. Endoscopic resection will be done with endoscopic submucosal dissection rather than by piecemeal mucosectomy. Primary outcome(s): en bloc an R0 resection rate, evaluated endoscopically and by histopathology Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: treatment

DISEASE(S): Malignant Neoplasm Of Rectum,Transverse Colon,Anus And Anal Canal,Descending Colon,Appendix,Caecum,Splenic Flexure,Hepatic Flexure,Ascending Colon,Rectum,Rectosigmoid Junction,Sigmoid Colon

PROVIDER: 2439716 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

ACCESS DATA

Similar Datasets

Project description:Colorectal cancer (CRC) is the third most common cancer in men and the second in women worldwide, with 1.65 million new cases and almost 835,000 deaths in 2015. CRC is still a major cause of mortality associated with cancer, although the wide spread of the screening program has led to a reduction in the mortality rate compared to the last decades. CRCs derive from precancerous lesions that may be polypoid or non-polypoid according to the Paris classification. Thus, resection in an early stage could led to a CRC mortality reduction. Laterally spreading tumors (LST) are non-polypoid lesions of at least 1 cm in diameter that have lateral growth rather than upward or downward growth. The prevalence of LSTs ranges from 1 to 6% of all colorectal lesions. LSTs can be divided into two groups: granular LSTs, which include homogeneous and granular mixed forms and non-granular (NG) LSTs, which include pseudo-depressed and flat-elevated forms. Histologically, 90% of LSTs are adenomas and having a low incidence of invasive neoplasia, these lesions can be removed endoscopically. However, as evidenced by a recent meta-analysis published by Bogie Roel MM et al on Endoscopy, the type of LST and the distal or proximal colonic localization could represent predictors of submucosal invasion and could simplify the therapeutic decision for the removal of these lesions. GM-LSTs and pseudo-depressed NG-LSTs predominantly localize in the distal portion of the colon and have a submucosal invasion rate of 10,5% and 31,6% respectively. LSTs can be removed both through endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD). The main limitation of EMR is that large lesions require a piecemeal approach, resulting in a non-optimal histological evaluation and a high risk of recurrence. ESD instead allows a higher rate of en bloc resections, thus resulting more curative and reducing the risk of having partial and incomplete resections, which can lead to disease recurrence/non curative resection. LST-GM are characterized by the presence of a granular appearance with a main nodule and represent approximately 1/4 of the LSTs. There are no guidelines indicating the proper resective technique of these lesions. The European Society of Gastrointestinal Endoscopy (ESGE) suggests to consider ESD for the removal of colorectal lesions that are > 20 mm in size, with a depressed and irregular morphology or a non-granular surface pattern, as these lesions have a high probability of having a limited submucosal invasion. Moreover ESD can be used to treat lesions that cannot be completely removed with standard polypectomy or EMR. The investigators propose to perform a multicenter retrospective observational study to define the percentage of cancer in patients with GM-LSTs treated with endoscopic resection in order to evaluate the correlation between pre-resection and post-resection characteristics, defining the best therapeutic approach (en bloc or piecemeal) and avoiding incomplete endoscopic resections or unnecessary surgical procedures.

Dataset Information

Endoscopic submucosal dissection for treatment of advanced colorectal neoplasia

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets