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CT angiogram images. a Axial image showing a small pseudo-aneurysm (arrow) arising from the posterior wall of the right carotid artery closely abutting the trachea with the tracheostomy tube in situ and rim of pretracheal hematoma. b Sagittal reformatted image showing right carotid artery pseudo-aneurysm fistulising into the trachea at the site of tracheostomy. c Volume rendered image with bone subtraction showing a pseudoaneurysm of right carotid artery (arrow)
