Large Thrombosed Internal Carotid-Posterior Communicating Artery Aneurysm Presenting with Atypical Trigeminal Neuralgia: A Case Study

Abstract

We report a case of a large thrombosed internal carotid-posterior communicating artery aneurysm presenting with atypical trigeminal neuralgia. A 67-year-old woman presented with atypical trigeminal neuralgia of the left ophthalmic nerve territory. The patient underwent several nerve block therapies for the pain, and the symptoms got better each time. The patient considered neurosurgery after a left oculomotor palsy occurred. Magnetic resonance imaging revealed a left partially thrombosed large internal carotid-posterior communicating artery aneurysm distorting the left trigeminal nerve. The aneurysm was successfully treated using the neck clipping method, following which, both the trigeminal neuralgia and oculomotor nerve palsy improved.