Cerebellopontine angle arachnoid cyst harbouring ectopic neuroglia.
Arachnoid cysts are collections of cerebrospinal fluid covered by arachnoidal cells and collagen. They may have a congenital or acquired origin. We present the case of a 7-year-old boy with a cerebellopontine angle arachnoid cyst harbouring a portion of neuroglia. Microscopically, the cyst wall consisted of a delicate fibrovascular membrane lined by a layer of arachnoidal cells. A thin layer of glial tissue ran the whole length of the cyst wall. This finding supports a congenital origin for this case. Cerebellopontine angle arachnoid cysts harbouring neuroglia without ependymal elements are very rare lesions and may be successfully treated by surgical resection.
Ariai
Shafie
S
Department of Neurosurgery, University Hospital of Tubingen, Tubingen, Germany.
Koerbel
Andrei
A
Bornemann
Antje
A
Morgala
Matthias
M
Tatagiba
Marcos
M
D016080:Arachnoid Cysts / Q000473:pathology* / Q000601:surgery; D002530:Cerebellopontine Angle; D002648:Child; D002828:Choristoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D009457:Neuroglia