Basilar Artery Band Thrombus: Report of a Unique Case.

Basilar artery bands (BAB) are described in scant reports in the literature as shelves, bridges, septa, or webs within the lumen of the basilar artery. The anatomy and histology of these bands have only recently been fully explored and classified. Although there has been evidence of non-atherosclerotic calcification of these structures and vertebrobasilar atherosclerosis, previous studies have not demonstrated any plaque or thrombus formation on the basilar artery bands. Herein, we report the unique finding of a thrombus associated with a BAB. This case report warns interventionalists and neurosurgeons that there could be a thrombus around the BAB.