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.
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