<I>Cerebral Gumma Mimicking Glioblastoma on Magnetic Resonance Images</I>

  • UEMURA Kazuya
    Department of Neurological Surgery, Institute of Clinical Medicine, University of Tsukuba
  • YAMADA Takashi
    Department of Neurological Surgery, Kennan Hospital
  • TSUKADA Atsuro
    Department of Neurological Surgery, Kennan Hospital
  • ENOMOTO Takao
    Department of Neurological Surgery, Institute of Clinical Medicine, University of Tsukuba
  • YOSHHI Yoshihiko
    Department of Neurological Surgery, Institute of Clinical Medicine, University of Tsukuba
  • NOSE Tadao
    Department of Neurological Surgery, Institute of Clinical Medicine, University of Tsukuba

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  • <I><—Case Report—</I>

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A 39-year-old female presented with a syphilitic cerebral gumma mimicking small glioblastoma multiforme manifesting as visual impairment. Magnetic resonance imaging showed a low signal intensity area on T, -weighted images and marked small ring-like enhancement less than 1 cm in diameter following the administration of gadolinium. The symptoms and radiological abnormalities improved several weeks after penicillin therapy. The small ring-like enhancement was probably caused by inflammation associated with treponemal infection. A mass with a small ring-like enhancement less than 1 cm in diameter is a useful finding indicating an inflammatory lesion rather than a glial tumor.

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