Sylvian Fissure Chordoid Meningioma in an Adult PatientChitra Som RS*, and Satish Rudrappa
Department of Neurosurgery, Manipal Hospital, Bangalore, Karnataka, India.
Meningiomas arise from arachnoid cap cells and are usually found attached to the dura. Chordoid meningioma which comprises less than 0.5% of all meningiomas is rarely seen without dural attachment and its position in the sylvian fissure is aberrant. Our patient, a 50-yr-old female, was presented to us with headache and sensory seizures. The magnetic resonance imaging of the brain revealed left fronto temporal lesion. Tumour resection was performed through left pterional craniotomy and transsylvian approach. The tumour was seen without any dural attachment and was densely adhesive to the arachnoid layer of sylvian fissure. Histopathologic findings of resected tumour were suggestive of chordoid meningioma. Though meningiomas originate from arachnoid cap cells, it can arise at locations remote from pachymeninges. This is a rare case of adult sylvian fissure chordoid meningioma without dural attachment. The patient presented with sensory seizures, improved after surgical excision without any further recurrences.