Primary squamous cell carcinoma of the rectosigmoid portion of the colon.
D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D003082:Colectomy; D003110:Colonic Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D012811:Sigmoid Neoplasms / Q000473:pathology*