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': '"Marfan - like syndrome" is associated with: \nSelect and explain. \nA. Alkaptonuria, B. Homocystinuria, C. Phenylketonuria, D. Maple syrup disease', 'role': 'user'}, {'content': "Answer: B \nExplanation: Homocystinuria HOMOCYSTINURIA - Homocystinuria is similar in ceain superficial aspects to Marfan's syndrome, (Marfan-like syndrome) since patients may show a similar body habitus and 'ectopia lentis is almost always present. - Mental retardation is often present, and the cardiovascular events are those of repeated venous & aerial thrombosis. - Joints: Stiff.", 'role': 'assistant'}]