[Giant extradural epidermoid cyst of the posterior fossa].
We report an unusual case of giant extradural epidermoid cyst of the posterior fossa in a 73-year-old man. The patient presented headache and gait disturbance for 3-4 months, cerebellar ataxia, left cerebellar dysmetria, and perturbed balance. The CT-scan showed a huge posterior fossa extradural lesion with a small area of peripheral contrast enhancement. Outcome was good after total resection of the lesion via a suboccipital approach. Pathology reported an epidermoid cyst. Extradural epidermoid cyst is a rare benign tumor of the skull which sometimes can reach considerable size. It is a slow growing lesion and may cause mild neurological deficits. The goal of surgical treatment is total resection of the tumor with its capsule. The long-term prognosis is excellent after successful resection.
Service de Neurochirurgie, CHU de Caen. alin.borha@excite.com
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A
Borha
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E
Emery
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S
Khouri
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M
Hitier
J M
JM
Derlon
D000368:Aged; D002524:Cerebellar Ataxia / Q000209:etiology; D003388:Cranial Fossa, Posterior; D004814:Epidermal Cyst / Q000601:surgery*; D020233:Gait Disorders, Neurologic / Q000209:etiology; D006261:Headache / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019635:Neurosurgical Procedures; D011379:Prognosis