Causes of ano-rectal bleeding.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001004:Anus Diseases / Q000175:diagnosis*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012002:Rectal Diseases / Q000175:diagnosis*