title: Pineal yolk sac tumor: correlation between neuroimaging and pathological findings.
abstract: A 17-year-old boy presented with somnolence and mental confusion. Physical examination demonstrated motor disturbances. Laboratory 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.
authors.affiliation: School of Medicine, Universidade Federal Paraná, Curitiba, PR, Brazil. taisadavaus@hotmail.com
authors.forename: Taísa
authors.initials: T
authors.lastname: Davaus
authors.forename: Emerson L
authors.initials: EL
authors.lastname: Gasparetto
authors.forename: Arnolfo de
authors.initials: Ad
authors.lastname: Carvalho Neto
authors.forename: Juliana Elizabeth
authors.initials: JE
authors.lastname: Jung
authors.forename: Luiz Fernando
authors.initials: LF
authors.lastname: Bleggi-Torres
mesh_terms: D000293:Adolescent; D001706:Biopsy; D001932:Brain Neoplasms / Q000473:pathology*; D018240:Endodermal Sinus Tumor / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010870:Pineal Gland / Q000473:pathology*