title: The fine structure of hyaline inclusions in meningioma.
abstract: Hyaline inclusions of three meningiomas were studied at the ultrastructural level. The inclusions apparently arise as the result of fusion of smaller microvillus-containing intracytoplasmic cysts. The content of the inclusions consists of finely reticulated filamentous material. These findings suggest a secretory differentiation of meningeal cells in these meningiomas.
mesh_terms: D000328:Adult; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure*; D008297:Male; D008577:Meningeal Neoplasms / Q000648:ultrastructure*; D008579:Meningioma / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008875:Middle Aged