Change in bowel habit, abdominal pain, and a palpable abdominal mass in a 58-year-old female.

Giant colonic diverticulum is a rare complication of diverticulosis, which may present in the acute or chronic setting. Colonic resection and en bloc resection of the diverticulum are the favored management, however, conservative treatment remains an option that could be considered in asymptomatic patients with minimal symptoms.