Diagnosing and treating rectal problems.
D000038:Abscess / Q000150:complications / Q000175:diagnosis; D005401:Fissure in Ano / Q000150:complications / Q000175:diagnosis; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006484:Hemorrhoids / Q000150:complications / Q000175:diagnosis; D006801:Humans; D012002:Rectal Diseases / Q000209:etiology*