Aneurysm on a persisting primitive trigeminal artery occluded with guglielmi detachable coils.

SUMMARY: A persisting primitive trigeminal artery (PPTA) is present in 0.2 - 0.6% of all cerebral angiographies. 27 cases of PPTA aneurysms have been reported. We present a case with sixth cranial nerve palsy due to a non ruptured aneurysm on a persisting primitive trigeminal artery. The aneurysm was successfully occluded with Guglielmi Detachable Coils with preservation of the parent artery. The cranial nerve palsy resolved and recovery was uneventful.