This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peritoneum, Subject name: Surgery
[{'content': 'True about pelvic abscess \nSelect and explain. \nA. Uncommon cause of intraperitoneal abscess, B. Identified by CT if there is a full bladder, C. Associated with pyothorax, D. May spontaneously drain via rectum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) May spontaneously drain via rectumRef: Sabiston I9th edition Page 1312* Pelvic abscess is the mc site of abscess formation in sitting position.* Rutherford Morrison pouch is the mc site of abscess formation in lying position.* Pelvic abscess is drained via rectum.* Pelvic abscess is associated with diverticulitis.* Pelvic abscess is identified after emptying the bladder in USG and CECT abdomen much clearly.', 'role': 'assistant'}]