Objective To analyze the endoscopic findings and pathological results of pedunculated colonic polyps, and to discuss the risk factors for high-risk polyps.

Methods A total of 297 pedunculated colonic polyps in 255 patients in the Endoscopic Diagnosis and Treatment Center of Tianjin People′s Hospital were retrospectively analyzed. The clinical characteristics, endoscopic manifestations and pathological results were analyzed. Multivariate Logistic regression analysis was used to study the risk factors of high risk polyps of pedunculated colonic polyps.

Results There were no significant differences in proportions of high-risk polyps in different gender and age (P > 0.05), but there were significant differences in the proportions of high-risk polyps in patients with colorectal cancer history, differed locations, surface with or without complete congestion, different pedicle length and different tip size (P < 0.05 or P < 0.01). Multivariate Logistic regression analysis showed that the tip diameten of polyps > 1~ < 2 cm, ≥2 cm and the history of colorectal cancer were independent risk factors for high risk polyps of pedunculatedcolonic polyps.

Conclusion Patients with larger tips of polyps and complicating with colorectal cancer history have higher risk of high-risk polyps and the higher cancerous potential risk, so endoscopic resection should be performed as early as possible.