Abstract
En plaque meningioma is a rare type of meningioma characterized by an infiltrative nature, sheet-like growth, and at times invading the bone. We report here a case of en plaque meningioma. The patient was a 66-year-old woman presenting with headache and painful bilateral proptosis. Cerebral magnetic resonance imaging revealed a bilateral en plaque meningioma showed as a bilateral hyperostotic of greater wing sphenoid bone associated with bilateral thickening and enhancement of the dura in the anterior temporal area and the retroclival region invading bilaterally the cavernous sinus, the prechiasmatic portion of the optic nerve, and the lateral rectus muscle of the orbit through the superior orbital fissure causing bilateral exophthalmia. Due to invasion of the cavernous sinus and the orbital apex, a subtotal but extensive removal combined with bony decompression of the cranial nerves at the superior orbital fissure and optic canal followed by adjuvant radiotherapy frequently produces good functional and cosmetic results, and over a 3-year period, follow-up magnetic resonance imaging scans showed no obvious signs of recurrence.
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