Intracranial epidermoid tumor with changes in signal intensity on magnetic resonance imaging because of non-hemorrhagic pathology

Jun Muto, Kazunari Yoshida, Suketaka Momoshima, Michitake Kazuno, Takahito Kazuno

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A 61-year-old woman presented an intracranial epidermoid tumor manifesting as dizziness and right facial hypesthesia. Magnetic resonance (MR) imaging revealed a well-defined lobulated mass in the right cerebellopontine angle as nearly isointense to the cerebrospinal fluid (CSF) on both T1- and T2-weighted images but inhomogeneously hyperintense on fluid-attenuated inversion recovery images. MR imaging performed 1 year later revealed that the tumor had significantly enlarged, and now appeared hyperintense to the CSF on T1- and T2-weighted images. The lesion was confirmed at surgery to be an epidermoid tumor filled with xanthochromic fluid. Histological examination found no evidence of hemorrhage in the resected tumor, so the changes in the MR imaging signal intensity were attributed to changes in the protein concentration of the intratumoral fluid, accumulation of debris, or some other non-hemorrhagic process.

Original languageEnglish
Pages (from-to)936-938
Number of pages3
JournalNeurologia medico-chirurgica
Volume50
Issue number10
DOIs
Publication statusPublished - 2010

Keywords

  • Follow up
  • Intracranial epidermoid
  • Magnetic resonance imaging
  • Radiographic change

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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