Torsion, necrosis, and inflammation of an epiploic appendix of the large bowel: a diagnostic and therapeutic dilemma

We present the case of a young patient with abdominal pain of 3 weeks' duration and a preoperative presumptive diagnosis of acute appendicitis, diverticulitis, colon perforation, or possibly neoplasm. Even after resection of a large mass involving the right colon, the diagnosis was not confirmed until surgical pathology identified torsion, partial necrosis, and inflammation of an epiploic appendix of the right colon.