title: Myxoid meningioma.
abstract: A mucosubstance-rich myxoid meningioma that recurred twice is reported. This rare form of meningioma is a potential source of confusion with other myxoid neoplasms such as metastatic adenocarcinoma or chordoma. In addition to the usual stigmata of meningial cell differentiation, ultrastructural examination revealed spaces delineated by a network of cellular processes and enclosing loose granular and fibrillar material. This neoplasm is probably linked to the so-called microcystic meningioma but has an overt production of acid mucosubstance.
authors.affiliation: Department of Pathology, McGill University, Montreal, Quebec, Canada.
authors.forename: L R
authors.initials: LR
authors.lastname: Bégin
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D002843:Chromatin / Q000648:ultrastructure; D003094:Collagen / Q000032:analysis; D003593:Cytoplasm / Q000032:analysis / Q000648:ultrastructure; D006003:Glycogen / Q000032:analysis; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008577:Meningeal Neoplasms / Q000648:ultrastructure*; D008579:Meningioma / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D014617:Vacuoles / Q000648:ultrastructure
chemical_list: D002843:Chromatin; D006003:Glycogen; D003094:Collagen