Branch artery occlusion. An unusual complication of external carotid embolization
H. K. Soong, S. A. Newman and A. A. Kumar
A case of retinal branch artery occlusion was caused by migration of
emboli, presumably via collateral circulation, during therapeutic
embolization of the maxillary artery. Migration of particles to the
ophthalmic circulation is unusual with embolization of the branches of the
external carotid artery. Meticulous technique, careful angiographic
monitoring, and proper selection of embolic material may reduce, but not
eliminate, migration of emboli to undesirable locations. Therapeutic
embolization of vascular tumors and malformations in the external carotid
territory is a recent radiologic innovation that is becoming increasingly
popular. Therefore, we may expect to see more ocular complications from
aberrant emboli as the use of this technique becomes more widespread.
