1Raiford TS.Epitheliomata of the lower rectum and anus.Surg Gynecol Obstet 1933; 57:21-35.
2Catell RB,Williams AG.Epidermoid carcinoma of the anus and rectum.Archives of Surgery 1943; 46:336-349.
3Wiener MF,Polayes SH,Yidi R.Squamous carcinoma with schistosomiasis of the colon.Am J Gastroenterol 1962; 37:48-54.
4Cabrera A,Pickren JW.Squamous metaplasia and squamous-cell carcinoma of the rectosigmoid.Dis Colon Rectum 1967; 10:288-297.
5Minkowitz S.Primary squamous cell carcinoma of the rectosigmoid portion of the colon.Arch Pathol 1967; 84:77-80.
6Williams GT,Blackshaw AJ,Morson BC.Squamous carcinoma of the colorectum and its genesis.J Pathol 1979; 129:139-147.
7Vezeridis MP,Herrera LO,Lopez GE,Ledesma EJ,Mittleman A.Squamous-cell carcinoma of the colon and rectum.Dis Colon Rectum 1983; 26:188-191.
8Lafreniere R,Ketcham AS.Primary squamous carcinoma of the rectum.Report of a case and review of the literature.Dis Colon Rectum 1985; 28:967-972.
9Pigott JP,Williams GB.Primary squamous cell carcinoma of the colorectum:case report and literature review of a rare entity.J Surg Oncol 1987; 35:117-119.
10Woods WG.Squamous cell carcinoma of the rectum arising in an area of squamous metaplasia.Eur J Surg Oncol 1987; 13:455-458.