Cytology in rectosigmoid cancer.
D000230:Adenocarcinoma / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D003581:Cytodiagnosis / Q000379:methods*; D006801:Humans; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012811:Sigmoid Neoplasms / Q000175:diagnosis*