Perforated solitary diverticulitis of the ascending colon.

Solitary diverticulae of the cecum or ascending colon are rare clinical entities. Diverticulitis can occur with these lesions, but the diagnosis is frequently missed as the presentation is similar to that of acute appendicitis and can mimic other acute intraabdominal infections such as cholecystitis. Treatment of this condition is similar to that of left-sided diverticulitis. We report a case of solitary perforated diverticulum of the right colon in a patient who had a previous appendectomy and the diagnosis was mistaken for cholecystitis.