Medulloblastoma presenting as blindness of rapid evolution. A case report.
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.
Teixeira
F
F
Department of Experimental Neuropathology, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
Penagos
P
P
Lozano
D
D
Lopez
M
M
Romero
V
V
Ortiz
A
A
Salgado
P
P
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