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Regarding aortic transection (traumatic aortic injury), which of the following are true?
a) The most common site is the ascending aorta
b) The descending aorta is rarely involved
c) The left apical cap’ sign is highly specific for aortic transection
d) The chest radiograph is normal in 30% of cases at presentation
e) Chronic false aneurysm develops in 5% of cases

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