Optic tract compression from dolichoectatic basilar artery.
OBJECTIVE
To report a case of optic tract compression caused by a dolichoectatic basilar artery.


METHODS
Observational case report.


METHODS
A 74-year-old man with progressive loss of vision over 13 years and no other neurologic signs or symptoms was found to have bilateral optic nerve head pallor and a left homonymous hemianopia.


RESULTS
Magnetic resonance imaging and angiography revealed a severe dolichoectatic basilar artery compressing the right optic tract.


CONCLUSIONS
Basilar artery dolichoectasia may rarely cause compression of the optic tract and progressive visual loss.
Guirgis
M F
MF
Bascom Palmer Eye Institute, Miami, Florida 33163, USA.
Lam
B L
BL
Falcone
S F
SF
D000368:Aged; D001488:Basilar Artery / Q000473:pathology*; D006423:Hemianopsia / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000175:diagnosis; D008279:Magnetic Resonance Imaging; D008297:Male; D009408:Nerve Compression Syndromes / Q000175:diagnosis / Q000209:etiology*; D009901:Optic Nerve Diseases / Q000175:diagnosis / Q000209:etiology*; D014792:Visual Acuity; D014794:Visual Fields; D014795:Visual Pathways