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Mar 10 2011, 6:48 PM EST (current) M.J.Fuller 1 word added
Mar 10 2011, 6:46 PM EST M.J.Fuller

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Introduction
The calcium sign is a finding on chest x-ray that suggests aortic dissection. It is the separation of the intimal calcification from the outer aortic soft tissue border by 10mm. (http://en.wikipedia.org/wiki/Aortic_dissection) This is not an important sign for radiographers given that it is rarely seen.


Plain film Appearance
calcium signcalcium sign
The arrowed distance represents a normal aortic wall thicknessThe arrowed distance represents the aneurysmal wall thickness.