Squamous metaplasia and squamous-cell carcinoma of the rectosigmoid.
D002294:Carcinoma, Squamous Cell; D003248:Constipation / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008679:Metaplasia; D008875:Middle Aged; D010784:Photomicrography; D011859:Radiography; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology