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Cranial and Spinal Meninges

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

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Primary Extradural Ectopic Orbital Meningioma.

Irwin Tendler¹, Irina Belinsky, David H Abramson

¹*Ophthalmic Oncology Service, Memorial Sloan-Kettering Cancer Center, New York New York; and †Department of Ophthalmology, Weill Cornell Medical College, New York, New York, U.S.A.

Ophthalmic Plastic and Reconstructive Surgery

|October 28, 2015

Summary

This study details a rare pediatric extradural ectopic meningioma. Early diagnosis and complete surgical excision are key for managing this unusual orbital tumor.

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Area of Science:

Neuro-oncology
Pediatric Neurosurgery
Ophthalmology

Background:

Ectopic meningiomas are rare tumors arising outside the central nervous system.
Primary extradural meningiomas in the orbit are exceptionally uncommon, particularly in pediatric patients.

Observation:

A 9-year-old female presented with a rare case of primary extradural ectopic meningioma.
The tumor was located in the medial orbit without bone or optic nerve sheath involvement.

Findings:

Diagnostic clues for this unusual tumor include young age, medial orbital location, sinus asymmetry, and lack of bone/optic nerve involvement.
Literature review highlights clinical presentation, radiographic findings, management, and outcomes of similar rare cases.

Implications:

Early recognition of specific radiographic features can aid in diagnosing this rare pediatric orbital tumor.
Complete surgical excision remains the preferred treatment modality for a favorable outcome.