Optochiasmatic cavernous malformation: a rare cause of acute vision loss

Bruno Niemeyer de Freitas Ribeiro, Bernardo Carvalho Muniz, Nina Ventura Wilner, Emerson Leandro Gasparetto, Edson Marchiori
2017 Arquivos de Neuro-Psiquiatria  
A 63-year-old woman experienced the sudden onset of left retro-orbital pain and left visual disturbance. Neurological examination revealed decreased left visual acuity. Magnetic resonance imaging revealed a mass with mixed signal intensity at the left optic nerve and optic chiasm (Figure) . Left frontotemporal craniotomy was performed using the pterional approach, and histological examination of the specimens confirmed cavernous malformation. Postoperatively, the patient' s left visual acuity
more » ... eft visual acuity improved slightly, but the visual field defect was unchanged. Cavernous malformations of the optic chiasm are unusual lesions. The presenting symptoms range from progressive vision loss or pituitary disturbances to chiasmal apoplexy syndrome. Symptomatic cavernous malformations of the optic chiasm are generally treated surgically 1,2 .
doi:10.1590/0004-282x20170065 pmid:28658413 fatcat:zvj76aqzsjfhxi2n4x4k4tjcju