This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "Hirschprung's disease true are :a) Sometimes found in adultb) Dilated segment involvedc) Auerbach's plexus absentd) Sometimes involve small intestine e) Bleeding PR is usual presentation \nSelect and explain. \nA. abc, B. ad, C. acd, D. bde", 'role': 'user'}, {'content': 'Answer: C \nExplanation: S. Das writes - "The symptoms appear within 3 days of birth and the presenting features are as follows:\n\n\nConstipation\nAbdominal distention"\n\n\nNelson writes - "The clinical symptoms of Hirschprung disease usually begin at birth with the delayed passage of meconium."\nLoud borborygmi is heard due to intestinal obstruction.\nAbout stool Nelson writes -\n\n"The stools when passed may consist of small pelletes, may be ribbon-likel or may have fluid consistency; the large stools and fecal soiling of patients with functional constipation are absent."\n\nAlso know\n\n\na large fecal mass may be palpable in the left lower abdomen, but on rectal examination the rectum is usually empty of feces (feces in rectum are found in functional constipation).', 'role': 'assistant'}]