Neuro-Ophthalmology & Neuro-Otology
Central deafness
May. 01, 2024
This is an image preview.
Start a Free Account
to view the full image.
-
Nearly 3,000 illustrations, including video clips of neurologic disorders.
-
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
-
Full spectrum of neurology in 1,200 comprehensive articles.
-
Listen to MedLink on the go with Audio versions of each article.
Fistulous shunt: digital subtraction angiography post-intervention (2)
Anteroposterior (AP) and lateral views of the left external carotid artery injection show hypertrophy of several branches of the middle meningeal artery (AP image 8 of 22, 0 sec). The enlarged middle meningeal artery has a fistulous connection with the superior sagittal sinus. This results in early and abnormal contrast opacification of the superior sagittal sinus (AP image 13 of 22, 2 sec, and lateral image 12 of 22, 7 sec). The fistulous drainage continues into the right transverse and sigmoid sinuses and right internal jugular vein (AP image 20 of 22, 3 sec). This “arterialization” of the sinuses renders them incapable of receiving the normal venous drainage of the brain. (Contributed by Dr. Kristine Ann Blackham.)