[Deep cystic colitis. Apropos of a case simulating a neoplastic mass. Review of the literature].

Deep cystic colitis is a benign affection closely related to solitary ulcers of the rectum and inversed hamartomatous polyps. Symptoms lack specificity and its interest resides mainly in its possible confusion with a mucin secreting colloid carcinoma. Failure to recognize the lesion resulted in mutilating operations in several cases reported in the literature confirmed from clinical, radiologic and pathologic data, and the treatment of choice is local excision of the lesion.