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': 'A middle aged patient presents with complaint of right hypochondrial pain. On plain chest x ray, elevated right hemidiaphragm is seen. All of the following are possible diagnosis except: \nSelect and explain. \nA. Acute cholecystitis, B. Subphrenic abscess, C. Amebic liver abscess, D. Pyogenic liver abscess', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e. Acute cholecystitis Also know. Level of right diaphragm on chest x ray: the dome of right diaphragm lies between 5 - 6'h ribs (anterior inferior ends of ribs). Left diaphragm lies 0.5 to 2.5 cm lower than the right dome of diaphragm.", 'role': 'assistant'}]