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': "Dercum's disease is commonest in the ? \nSelect and explain. \nA. Face, B. Arm, C. Back, D. Thigh", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Back Dercum's disease or adiposis dolorosa is a condition in which multiple lipomatous swellings are seen paicularly affecting the trunk.", 'role': 'assistant'}]