This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cellular Pathology, Subject name: Pathology
[{'content': '60 year old asymptomatic female shows following change in tunica media of blood vessels. Diagnosis? \nSelect and explain. \nA. Medial calcification, B. Medial fibrosis, C. Amyloidosis, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Medial calcificationMedial artery calcification (MAC) is also known as Monckeberg's arteriosclerosis, is a nonobstructive condition leading to reduced arterial compliance that is commonly considered as a nonsignificant finding.With the H&E stain, calcium appear deep blue-purple.", 'role': 'assistant'}]