title: Cytologic features of chordoid meningioma. A case report.
abstract: BACKGROUND
  Chordoid meningioma is a rare subtype of meningioma characterized by myxoid matrices deposited among epithelioid or vacuolated tumor cells and infiltrates of inflammatory cells, and its cytologic features have rarely been reported.
  
  
  METHODS
  A 57-year-old man with a history of headache and visual disturbance presented with a tumor in the suprasellar region. Intraoperative touch smear cytology of the tumor disclosed a cord-like arrangement of polygonal tumor cells occasionally containing intranuclear inclusions. Furthermore, periodic acid-Schiff-positive, mucinous matrices were deposited among the tumor cells. Also, infiltrates of lymphocytes and plasma cells were noted. Histologic, immunohistochemical and ultrastructural examination confirmed the diagnosis of chordoid meningioma.
  
  
  CONCLUSIONS
  Intraoperative smear cytology in a case of chordoid meningioma showed distinctive cytologic features suggestive of the histologic patterns. The cytologic features, together with a histologic examination, are useful for its diagnosis.
authors.affiliation: Department of Pathology, Saitama Medical School, Morohongo 38, Moroyama, Irumagun, Saitama, 350-0495, Japan.
authors.forename: Hatsumi
authors.initials: H
authors.lastname: Inagawa
authors.forename: Keisuke
authors.initials: K
authors.lastname: Ishizawa
authors.forename: Shio
authors.initials: S
authors.lastname: Shimada
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Shimada
authors.forename: Ryo
authors.initials: R
authors.lastname: Nishikawa
authors.forename: Masao
authors.initials: M
authors.lastname: Matsutani
authors.forename: Takanori
authors.initials: T
authors.lastname: Hirose
mesh_terms: D002830:Choroid Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D017809:Fatal Outcome; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D008875:Middle Aged; D009077:Mucins / Q000378:metabolism; D010503:Periodic Acid-Schiff Reaction; D011859:Radiography
chemical_list: D009077:Mucins