Petro-clival meningioma

Discussion:

Petroclival meningioma arises in the upper two thirds of the clivus at the petroclival junction medial to the fifth cranial nerve. These tumors displace the brain stem and the basilar artery to the opposite side. Petroclival meningiomas are surgically challenging tumors due to the proximity to cranial nerves, major blood vessels, and the brainstem with considerably high postoperative morbidity and mortality. Patients usually present with insidious onset of headache, lower cranial neuropathy with unilateral hearing loss or facial sensory disturbances may be the most frequently encountered and in severe cases, trigeminal neuralgia.   Brainstem and cerebellar compression signs e.g. gait disturbance are not uncommon. Gamma Knife surgery of petro-clival meningiomas is the treatment of choice.

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