Risk factors for incomplete polyp resection during colonoscopic polypectomy.

Area of Science:

• Gastroenterology
• Endoscopic Surgery
• Colorectal Cancer Prevention

Background:

• Colonoscopic polypectomy is crucial for preventing colorectal cancer.
• Incomplete polyp resection (IPR) remains a challenge, potentially increasing cancer risk and healthcare costs.
• Identifying risk factors for IPR can optimize endoscopic procedures.

Purpose of the Study:

• To investigate the conditions and factors contributing to incomplete polyp resection (IPR) after colonoscopic polypectomy.
• To identify specific polyp characteristics and procedural elements associated with IPR.
• To provide data for improving polypectomy techniques and reducing recurrence rates.

Main Methods:

• Retrospective analysis of 12,970 colonoscopic polypectomies.
• Matched case-control study comparing 228 cases of IPR with 228 controls.
• Evaluation of polyp location, morphology, histology, and endoscopist/assistant experience.

Main Results:

• Polyps in the proximal colon and rectum were significantly associated with IPR.
• Advanced polyp histology and inexperienced assistant support were identified as independent risk factors for IPR.
• Multivariate analysis confirmed these factors' impact on resection completeness.

Conclusions:

• Careful polypectomy is recommended for proximal colon/rectal polyps and those suspected of malignancy.
• Systematic training for endoscopy assistants may reduce the incidence of IPR.
• Addressing identified risk factors can enhance the efficacy of colonoscopic polypectomy in cancer prevention.