This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Vessels, Subject name: Pathology
[{'content': "Dissecting haematoma is a clinical complication occurring in \nSelect and explain. \nA. Turner's syndrome, B. Klinefelter's syndrome, C. Down syndrome, D. Marfan syndrome", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Marfan syndrome(Ref: Robbins 9th/pg 491-492; 8th/pg 496-497, Harrison 18th ed 2063)Dissecting aneurysmWall of an artery rips (dissects) longitudinallyThis occurs because bleeding into the weakened wall splits the wall.Common in Marfan syndrome QThoracic aorta more affected Q', 'role': 'assistant'}]