%0 Journal Article %T Pineal yolk sac tumor: correlation between neuroimaging and pathological findings %A Davaus %A Ta¨Ēsa %A Gasparetto %A Emerson L. %A Carvalho Neto %A Arnolfo de %A Jung %A Juliana Elizabeth %A Bleggi-Torres %A Luiz Fernando %J Arquivos de Neuro-Psiquiatria %D 2007 %I Academia Brasileira de Neurologia - ABNEURO %R 10.1590/S0004-282X2007000200018 %X a 17-year-old boy presented with somnolence and mental confusion. physical examination demonstrated motor disturbances. laboratorial investigation showed elevated levels of alpha-fetoprotein in serum and cerebrospinal fluid. the ct scan revealed a heterogeneous mass at the pineal region. at the mri, this lesion was hypointense on t1 and hyperintense on t2-weighted images, enhancing after contrast administration. the patient underwent a surgical biopsy, which defined the diagnosis of yolk sac tumor. we emphasize the correlation of neuroimaging and pathological findings of this rare pineal region tumor. %K yolk sac tumor %K pineal region %K magnetic resonance imaging. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0004-282X2007000200018&lng=en&nrm=iso&tlng=en