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MCQ 42: Calcium sign

Q. Calcium sign is seen in?
A. Aortic aneurysm
B. Aortic dissection
C. Rheumatic heart disease
D. Constrictive pericarditis




Answer: B. Aortic dissection

Explanation:
The calcium sign is defined as the separation of the intimal calcification from the outer aortic soft tissue border by more than 10 mm.
It is a specific chest radiographic finding of aortic dissection.
It is more commonly seen in descending aortic dissection than aortic arch dissections.
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