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Information

Skull and Spine Disorders

Mean age: 46 years; M >F

Path: soft encapsulated (75%) slightly hemorrhagic mass supplied by numerous feeding arteries

Histo: chief cells + sustentacular cells surrounded by fibrovascular stroma; nests of chief cells in classic “Zellballen” configuration

Location: cauda equina, filum terminale

Site: intradural extramedullary compartment

Mean size: 3.3 (range, 1.5–10.0) cm

CT:

Angio: