Basilar trunk artery aneurysm (BTAA) has an overall low incidence in intracranial aneurysm, but its rupture is associated with high morbidity and mortality in older people. Situs inversus totalis (SIT) is a rare congenital abnormality characterized by visceral rotation and vascular abnormalities. It has been described in several uncommonly clinical cases, along with middle cerebral artery aneurysms and large carotid cavernous aneurysms. However, the association between interventional embolization for BTAA and SIT has not been reported. We described the angiography findings and interventional treatment of the association of BTAA with SIT.
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