Question: A 71-year-old man presented to the emergency department with episodic bright red blood per rectum. He reported that these episodes occur for 15-20 minutes per day for 1- to 2-week periods and usually resolve spontaneously, but that when he bleeds, he has to wear pads or toilet paper to avoid soiling his clothing with blood. These episodes have been occurring for months. He denies any alleviating or exacerbating factors, and denies any pain associated with his bleeding. His past medical history includes diagnoses of rheumatoid arthritis, external hemorrhoids, tubular adenomatous polyps, permanent atrial fibrillation on Coumadin, diabetes mellitus type 2, hypertension, and coronary artery disease.