A 65-year-old man presents to the emergency department 10 days after colonoscopy that had a significant lower gastrointestinal (GI) bleed. Review of the colonoscopy reports he had grade 3 hemorrhoids, a 20-mm semipedunculated polyp in the ascending colon removed with hot snare, a 8-mm sessile polyp removed in the transverse colon by cold snare, and sigmoid diverticulosis. Computed tomography angiography (CTA) is most likely to demonstrate a blush in the