This study evaluates how advanced endoscopic resection techniques affect treatment outcomes in adults with rectal cancer. Rectal cancer has traditionally been treated with standard abdominal surgery. Newer endoscopic techniques allow removal of selected early tumors and may reduce treatment-related complications. However, their effectiveness and safety in tumors with deeper invasion are not yet fully established. This multicenter retrospective observational study uses existing medical records from adults who underwent endoscopic or surgical resection of rectal tumors between 2015 and 2025. Researchers will analyze anonymized information on procedures performed and treatment outcomes to assess the safety and effectiveness of advanced endoscopic approaches. The results of this study may help guide treatment selection and improve care for people with rectal cancer.
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Major intraprocedural bleeding rate
Timeframe: During the procedure
Intraprocedural perforation rate
Timeframe: During the procedure
Delayed bleeding rate
Timeframe: Within 28 days after the procedure
Delayed perforation rate
Timeframe: Within 14 days after the procedure
Post-coagulation syndrome rate
Timeframe: Within 28 days following the procedure
The need for emergency interventions
Timeframe: Within 30 days after the procedure
Procedure-related mortality rate
Timeframe: Within 30 days after the procedure