1. Anus, Rectum, Sigmoid Colon;Bacon,1943
2. Rectal malignant tumor in childhood;Bacon;Am. J. Dis. Child.,1942
3. Cancer of rectum in child eleven years old; case;Baillis;Mém. Acad. chir.,1942
4. Intestinal obstruction caused by adenocarcinoma;Barber;Interstate M. J.,1919
5. Carcinoma of sigmoid colon in nineteen year old boy; case;Bellone;Boll. e mém. Soc. toscoumbra chir.,1947