title: Psammoma bodies in meningioma. Appearance by scanning electron microscopy.
abstract: Psammoma bodies from eight memingiomas have been examined by both light and scanning electron microscopy (SEM). The bodies are primarily composed of calcium apatite which is deposited within a nidus of tightly laminated collagen fibers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001031:Apatites / Q000032:analysis; D002118:Calcium / Q000032:analysis; D003238:Connective Tissue / Q000032:analysis; D006801:Humans; D008577:Meningeal Neoplasms / Q000648:ultrastructure*; D008579:Meningioma / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged
chemical_list: D001031:Apatites; D002118:Calcium