Thoracic aortic aneurysm chest x ray

Thoracic aortic aneurysm Microchapters
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General Approach to Imaging in Thoracic Aortic Aneurysm
Chest X Ray
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Chest X Ray

Thoracic aneurysms are easily visible and can be efficiently diagnosed on chest x rays.

Characteristic findings include:

• widening of mediastinal silhouette
• enlargement or obliteration of the aortic knob
• displacement of the trachea from the midline to the right
• double-opacity appearance of the aorta
• localized bulge along the aortic contour
• displacement of calcification of the aortic wall

Chest x rays can display abnormalities in 80-90% of patients, however smaller aneurysms (saccular aneurysms) may not be apparent on a chest x ray.