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: Pathology
[{'content': 'Tree bark like calcification in chest X-ray is seen in - \nSelect and explain. \nA. Syphilitic aneurysm, B. Aortoarteritis, C. Neurofibromatosis, D. Atherosclerosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Syphilitic aortitis, an inflammatory aortitis involving the ascending aorta, sinuses of Valsalva\xa0and the aortic valve, is observed most commonly in patients older than 50 years.\nSyphilitic aortitis is associated with aortic insufficiency, ascending aortic aneurysms, and a\xa0positive serologic test for syphilis. In these patients, angina resulting from occlusion of the ostia of the\xa0coronary vessels also can be present.\nCalcification occurs in a linear pattern along the ascending aorta\nOn gross specimen examination, the aorta has been described as revealing a “tree-bark”\xa0appearance', 'role': 'assistant'}]