title: Magnetic resonance imaging of ecchordosis physaliphora--case report.
abstract: A rare case of ecchordosis physaliphora clearly demonstrated by magnetic resonance (MR) imaging is described in a 48-year-old male who presented with right hearing disturbance and reduction in sensation in the right side of his face due to a large cystic schwannoma. MR imaging revealed the large cystic schwannoma as well as an abnormal clival lesion. The clival lesion was hypointense on T1-weighted images and hyperintense on T2-weighted images, and not enhanced by gadolinium-diethylenetriamine-penta-acetic acid (Gd-DTPA) administration. The clival lesion was partially removed. The histological diagnosis was ecchordosis physaliphora. The postoperative course was uneventful. The absence of enhancement of ecchordosis physaliphora by Gd-DTPA administration may be a characteristic finding, in contrast to chordoma which is generally enhanced.
authors.affiliation: Department of Neurosurgery, Kawasaki Medical School, Okayama.
authors.forename: A
authors.initials: A
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Yanagita
authors.forename: R
authors.initials: R
authors.lastname: Ishii
authors.forename: T
authors.initials: T
authors.lastname: Shirabe
mesh_terms: D001932:Brain Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D002530:Cerebellopontine Angle / Q000000981:diagnostic imaging* / Q000473:pathology; D007839:Functional Laterality; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D010784:Photomicrography; D014057:Tomography, X-Ray Computed