title: Diffusion-weighted MR images and pineoblastoma: diagnosis and follow-up.
abstract: Pineoblastomas are uncommon pineal tumors, which demonstrate rapid growing and poor prognosis. We report the case of a 43-year-old man with an enhancing pineal region mass, which showed restriction of the diffusion on diffusion-weighted (DW) MR images. The surgical biopsy defined the diagnosis of pineoblastoma and the therapy was initiated with radiation and chemotherapy. Three months later, the follow-up MR imaging showed areas suggestive of necrosis and the DW images demonstrate no significant areas of restricted diffusion. The differential diagnosis of pineal region masses that could show restriction of diffusion is discussed.
authors.affiliation: Clinics Multi-Imagem and CDPI - Clínica de Diagnóstico por Imagem. egasparetto@gmail.com
authors.forename: Emerson L
authors.initials: EL
authors.lastname: Gasparetto
authors.forename: L Celso Hygino da
authors.initials: LC
authors.lastname: Cruz
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Doring
authors.forename: Bertha
authors.initials: B
authors.lastname: Araújo
authors.forename: Mário Alberto
authors.initials: MA
authors.lastname: Dantas
authors.forename: Leila
authors.initials: L
authors.lastname: Chimelli
authors.forename: Romeu C
authors.initials: RC
authors.lastname: Domingues
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D003937:Diagnosis, Differential; D038524:Diffusion Magnetic Resonance Imaging; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010870:Pineal Gland / Q000473:pathology; D010871:Pinealoma / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy