title: Spinal malignant schwannoma in a 5-year-old boy: ultrastructural evidence of its perineurial origin.
abstract: A case of a malignant spinal schwannoma in a 5-year-old boy is reported. Electron microscopic findings permitting the classification of the tumor and its possible origin from the nerve sheath (perineurial cell) are discussed.
mesh_terms: D002675:Child, Preschool; D003593:Cytoplasm / Q000648:ultrastructure; D003896:Desmosomes / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D009442:Neurilemmoma / Q000648:ultrastructure*; D013120:Spinal Cord Neoplasms / Q000648:ultrastructure*; D013126:Spinal Nerve Roots / Q000648:ultrastructure*