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
Not true regarding solitary rectal ulcer ? 
Select and explain. 
A. 20% are multiple, B. Recurrent rectal prolapse is a cause, C. Involves Posterior wall., D. Managed by digital reposition
C: Involves Posterior wall.
Answer: C: Involves Posterior wall. 
Explanation: Ans is 'c' ie Involves posterior wall Causes of solitary rectal ulcer syndrome Due to a combination of - internal intussusception anterior rectal wall prolapse - increase in intrarectal pressure Symptoms -4 pain, bleeding, mucus discharge or outlet obstruction Treatment Nonoperative therapy (high fibre diet, defecation training to avoid straining, and laxatives or enemas) is effective in the majority of patients. Surgery (either abdominal or perineal repair of prolapse) is reserved for highly symptomatic patients, who have failed all medical intervention e.g. rectopexy