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PT  - JOURNAL ARTICLE
AU  - Albayram, Sait
AU  - Urger, Efsun
AU  - Oz, Buge
AU  - Kafadar, Ali
AU  - Islak, Civan
AU  - Kocer, Naci
TI  - MR Imaging of Pial Melanosis Secondary to a Posterior Fossa Melanotic Ependymoma
DP  - 2005 Apr 01
TA  - American Journal of Neuroradiology
PG  - 804--808
VI  - 26
IP  - 4
4099  - http://www.ajnr.org/content/26/4/804.short
4100  - http://www.ajnr.org/content/26/4/804.full
SO  - Am. J. Neuroradiol.2005 Apr 01; 26
AB  - Summary: 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 hyperintense 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.