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
Recurrent obstruction, mass per rectum and diarrhoea in child - 
Select and explain. 
A. Intussusception, B. Rectal prolapse, C. Internal hernia, D. Haemorrhoids
A: Intussusception
Answer: A: Intussusception 
Explanation: Answer is 'a' i.e. Intussusception Although I could not find any documented evidence of diarrhoea in Intussusception, the given picture goes with intussusception only. Intussusception has been seen to complicate cases of gastroenteritis (Nelson 17/e p1242). Probably this can explain the diarrhoea.