RT Journal Article SR Electronic T1 Traumatic aneurysm of the internal carotid artery: a late finding presenting as a mass in the sphenoid sinus. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 222 OP 225 VO 17 IS 2 A1 A Ramos A1 R Tobio A1 E Ley A1 L Nombella A1 R Sanz YR 1996 UL http://www.ajnr.org/content/17/2/222.abstract AB We describe a case of a traumatic aneurysm of the cavernous portion of the internal carotid artery in a patient who had had craniofacial trauma 12 years before. MR and CT revealed a mass in the sphenoid sinus thought to be unrelated to the patient's symptoms. Carotid angiography gave the correct diagnosis.