Simulation of appendicitis by tumor-like lesion of cecum.

Four cases are presented in which an initial diagnosis of appendicitis was made. At laparotomy, a cecal lesion simulating a tumour was found. Pathological examination showed inflammatory granulomatous tumour against foreign body, non specific ulcer, diverticulitis and acute solitary diverticulitis. When malignancy is excluded, hemicolectomy is not necessarily the best treatment and we propose conservative management for these patients.