MR imaging of pial melanosis secondary to a posterior fossa melanotic ependymoma

Albayram S., Urger E., Oz B. , Kafadar A. M. , Islak C., Kocer N.

American Journal of Neuroradiology, cilt.26, sa.4, ss.804-808, 2005 (SCI Expanded İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Konu: 4
  • Basım Tarihi: 2005
  • Dergi Adı: American Journal of Neuroradiology
  • Sayfa Sayıları: ss.804-808


A 36-year-old man presented with trouble speaking and bilateral progressive hearing loss. MR imaging and histopathologic results revealed a posterior fossa melanotic ependymoma. Pial surfaces appeared hyperin-tense on T1-weighted images and hypointense on T2-weighted images. Histopathologic examination revealed that tumor cells and interstitial spaces had abundant melanin accumulation. There was no evidence of hemosiderin in tumor cells and in interstitial spaces. Pial melanin accumulation secondary to a posterior fossa melanotic ependymoma explained our MR findings. © American Society of Neuroradiology.