Abstract
Background
The European Society of Gastrointestinal Endoscopy (ESGE) and the Japan Gastroenterological Endoscopy Society (JGES) give no specific recommendations on the best treatment for colorectal neoplasia involving the dental line (DLCN).
Objective
Aim of this study was to analyse efficacy and safety of Endoscopic Submucosal Dissection in the treatment of colorectal neoplasia involving the dentate line (DLCN) compared to non-DLCN.
Design
Retrospective study.
Patients
We retrospectively evaluated all consecutive patients undergoing ESD for rectal neoplasia at two endoscopical tertiary referral centers (Italy and Japan) from January 2008 to December 2019.
Main outcome measures
Anthropometric, clinical, procedural, and follow-up data was collected, analysed, and compared between patients with DLCN and patients with non-DLCN.
Results
Overall, 314 patients were enrolled (163 female, 51.9%). Mean age was 68 years (range, 32–92 years). En-bloc resection was achieved in 311/314 (99%) patients. Lesion size was higher in DLCN group than in the non-DLCN group (46.1 vs 38.9 mm; p = .03). Submucosal invasion rate was also higher in the DLCN group (29.6 vs 18.4%, p = .04). Procedure time was significantly longer in the DLCN group, (89.6 vs. 73.1 min; p = .002). Hospitalization length following ESD was similar in both groups.
Limitations
Retrospective study design.
Conclusions
ESD seems to be safe and effective in the treatment of colorectal neoplasia involving the dentate line and can be considered the best therapeutic strategy.
Keywords:
Author contributions
GA, TK, JH, KH contributed to conception and design. GA, TK, KH contributed to acquisition of data. CH, GA, GA contributed to analysis and interpretation of data. GA, TK contributed to drafting of the article. GA, FDM, KH contributed to critical revision of the article. CH and GA contributed to statistical analysis. GC, FDM, KH approved the final draft of the article. All authors listed have contributed substantially to the design, data collection and analysis, and editing of the manuscript.
Disclosure statement
The authors have no conflict of interest related to the manuscript.