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Related Experiment Video

Updated: Feb 15, 2026

Minimizing Post-Infusion Portal Vein Bleeding during Intrahepatic Islet Transplantation in Mice
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Prospective analysis of delayed colorectal post-polypectomy bleeding.

Soo-Kyung Park1,2, Jeong Yeon Seo1, Min-Gu Lee1

  • 1Division of Gastroenterology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29 Saemunan-ro, Jongno-gu, Seoul, 03181, South Korea.

Surgical Endoscopy
|January 19, 2018
PubMed
Summary
This summary is machine-generated.

Delayed bleeding after colonoscopic polypectomy occurs in 3.4% of patients. Young age, aspirin use, larger polyp size, and immediate bleeding are key risk factors for this complication.

Keywords:
BleedingColon PolypColonoscopyColorectal neoplasmEndoscopy

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Area of Science:

  • Gastroenterology
  • Endoscopy
  • Colorectal Surgery

Background:

  • Post-polypectomy bleeding is a frequent complication of colonoscopy.
  • Prospective studies investigating delayed bleeding incidence and risk factors are limited.

Purpose of the Study:

  • To prospectively investigate the incidence of delayed post-polypectomy bleeding.
  • To identify associated risk factors for delayed bleeding after colonoscopic polypectomy.

Main Methods:

  • Prospective enrollment of patients undergoing colonoscopic polypectomy.
  • Telephone follow-up at 7 and 30 days using a standardized questionnaire.
  • Categorization of bleeding as minor/major and early/late, with specific definitions for major and late bleeding.

Main Results:

  • 133 out of 8175 polypectomies (3.4%) resulted in delayed bleeding.
  • Major delayed bleeding occurred in 1.1% and late delayed bleeding in 1.0% of patients.
  • Risk factors for major bleeding included young age (<50), aspirin use, and large polyp size (>10 mm).
  • Risk factors for late bleeding included young age (<50) and immediate bleeding.

Conclusions:

  • Young age, aspirin use, polyp size, and immediate bleeding are independent risk factors for delayed post-polypectomy bleeding.
  • These findings aid in identifying high-risk patients and potentially preventing complications.