[A special case of familial colonic polyposis].

An unusual case of familial polyposis coli has been reported in which polypoid lesions of the stomach and the ileum were found in association to the adenomatosis coli. The histological examination showed that these lesions were not adenomatous polyps, as supposed by the radiographs, but non-inflammatory cysts located within the intact fundal glands of the stomach, and lymphoid polyps ("lymphcysts") of the ileum. The genetic cause is possibly hamartoma. Both lesions are benign and there is no indication for an operation. The familial adenomatosis coli itself has a well-known special tendency to become malignant. The only way to interrupt the tendency is to remove the colon by colectomy.