title: Teratoma of the Sellar Region: a Case Report.
abstract: The case report describes a teratoma of the sellar region with a gland forming and an immature, relatively clear undifferentiated component without signs of anaplasia. Both components express TTF-1 indicating their presumable origin in the neurohypophysis as part of the circumventricular organs. The differential diagnosis includes pituitary adenoma and spindle cell oncocytoma with inclusion of Rathke's cleft cyst, pituitary blastoma, yolk sac tumor, and other germ cell tumors. The prognosis is the same as in the immature teratomas in the gonads, specifically unclear.
authors.affiliation: Institutes of Pathology and Neuropathology of the University of Hamburg, UKE, Martinistraße 52, 20246, Hamburg, Germany. w.saeger@uke.de.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Saeger
authors.affiliation: Department of Neuropathology, Institute of Pathology and Neuropathology of the University of Tübingen, 72076, Tübingen, Germany.
authors.forename: Azadeh
authors.initials: A
authors.lastname: Ebrahimi
authors.affiliation: Department of Neuropathology, Institute of Pathology and Neuropathology of the University of Tübingen, 72076, Tübingen, Germany.
authors.forename: Rudi
authors.initials: R
authors.lastname: Beschorner
authors.affiliation: Hormone Center Karlsruhe, 76133, Karlsruhe, Germany.
authors.forename: Hildegard
authors.initials: H
authors.lastname: Spital
authors.affiliation: Clinic of Neurosurgery of the University of Tübingen, 72076, Tübingen, Germany.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Honegger
authors.affiliation: Institute of Pathology of the University of Hamburg, UKE, 20246, Hamburg, Germany.
authors.forename: Waldemar
authors.initials: W
authors.lastname: Wilczak
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D010902:Pituitary Gland / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000473:pathology* / Q000601:surgery
keywords: Case report; Pathology; Pituitary; Teratoma