Case #2a
AP left common carotid angiogram shows filling of the upper half of the basilar artery, the right posterior cerebellar artery and the right superior cerebellar arteries. The diagonal artery joining the cavernous portion of the internal carotid artery with the mid-basilar artery is the persistent primitive trigeminal artery.
Case #2b
Lateral left common carotid angiogram again shows filling of the upper half of the basilar artery, the right posterior cerebellar artery and the right superior cerebellar arteries via the persistent trigeminal artery.