While generally safe, the most feared complication of colonoscopy is perforation of the colon, occurring in nearly 1 in 1,000 procedures, and is more common when polypectomy is performed and electrocautery is used. Less commonly known is the post-polypectomy electrocoagulation syndrome, a transmural burn of the colon which mimics the signs and symptoms of perforation as well as the time course, but follows a benign course and can be treated conservatively.
J Community Hosp Intern Med Perspect
Jehangir, A., Bennett, K. M., Rettew, A. C., Fadahunsi, O., Shaikh, B., & Donato, A. A. (2015). Post-polypectomy electrocoagulation syndrome: a rare cause of acute abdominal pain.. J Community Hosp Intern Med Perspect, 5 (5) https://doi.org/10.3402/jchimp.v5.29147