Cancer of the bowel.
D000230:Adenocarcinoma / Q000175:diagnosis; D000231:Adenocarcinoma, Papillary / Q000175:diagnosis; D001799:Blood Sedimentation; D003110:Colonic Neoplasms / Q000175:diagnosis; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D011351:Proctoscopy; D012004:Rectal Neoplasms / Q000175:diagnosis; D012698:Serologic Tests; D012811:Sigmoid Neoplasms / Q000175:diagnosis