title: An endodermal sinus tumor in the cerebellopontine angle.
abstract: Immunohistochemical and ultrastructural findings in a primary intracranial endodermal sinus tumor are reported in this paper. The tumor cells exhibited AFP, CEA and anti-alpha-1-trypsin positive immunoreactivity immunocytochemically. Aggregates of electron-dense material in the extra- and intracellular spaces and amorphous basement membrane-like substance were seen extracellularly by electron microscopy. The clinicopathological, immunocytochemical and ultrastructural features were consistent with the criteria for primary intracranial sinus tumor.
authors.affiliation: Department of Pathology, Jinling Hospital, Nanjing.
authors.forename: Q L
authors.initials: QL
authors.lastname: Shi
authors.forename: X Z
authors.initials: XZ
authors.lastname: Jin
authors.forename: X J
authors.initials: XJ
authors.lastname: Zhou
authors.forename: Y C
authors.initials: YC
authors.lastname: Qian
authors.forename: Q
authors.initials: Q
authors.lastname: Shi
mesh_terms: D002528:Cerebellar Neoplasms / Q000378:metabolism / Q000648:ultrastructure*; D002530:Cerebellopontine Angle; D002648:Child; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008649:Mesonephroma / Q000378:metabolism / Q000648:ultrastructure*