title: Medulloblastoma presenting as blindness of rapid evolution. A case report.
abstract: An 18-year-old man reported rapid decrease of visual acuity that progressed to total blindness in 1 month. Computed tomographic scanning showed two neoplastic masses: a large one, intra- and suprasellar, and a smaller cerebellar nodule. Histologically, the former proved to be a large metastasis of the small cerebellar medulloblastoma, which infiltrated and compressed the chiasm. Direct compression of the optic pathways by metastasis of a medulloblastoma is a rare event.
authors.affiliation: Department of Experimental Neuropathology, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
authors.forename: F
authors.initials: F
authors.lastname: Teixeira
authors.forename: P
authors.initials: P
authors.lastname: Penagos
authors.forename: D
authors.initials: D
authors.lastname: Lozano
authors.forename: M
authors.initials: M
authors.lastname: Lopez
authors.forename: V
authors.initials: V
authors.lastname: Romero
authors.forename: A
authors.initials: A
authors.lastname: Ortiz
authors.forename: P
authors.initials: P
authors.lastname: Salgado
mesh_terms: D000293:Adolescent; D001766:Blindness / Q000209:etiology*; D002528:Cerebellar Neoplasms / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008527:Medulloblastoma / Q000150:complications* / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014792:Visual Acuity