PT  - JOURNAL ARTICLE
AU  - Jeremiah Nicholas Johnson
AU  - Mohamed Elhammady
AU  - Judith Post
AU  - Joshua Pasol
AU  - Koji Ebersole
AU  - Mohammad Ali Aziz-Sultan
TI  - Optic pathway infarct after Onyx HD 500 aneurysm embolization: visual pathway ischemia from superior hypophyseal artery occlusion
AID  - 10.1136/neurintsurg-2013-010968.rep
DP  - 2014 Nov 01
TA  - Journal of NeuroInterventional Surgery
PG  - e47--e47
VI  - 6
IP  - 9
4099  - http://jnis.bmj.com/content/6/9/e47.short
4100  - http://jnis.bmj.com/content/6/9/e47.full
SO  - J NeuroIntervent Surg2014 Nov 01; 6
AB  - We report a case of visual deterioration after Onyx HD 500 embolization of a left 7 mm superior hypophyseal artery (SHA) aneurysm. After the procedure, the patient experienced a right incongruous homonymous hemianopia, and MRI showed an infarct of the ipsilateral optic chiasm/tract but no evidence of aneurysm mass effect or embolic cortical infarcts. The optic pathway ischemia is believed to be secondary to Onyx penetration and occlusion of an SHA branch near the aneurysm neck. Caution is advised when using liquid embolic agents to treat SHA aneurysms as SHA occlusion may lead to visual deficits.