Post-embolization perianeurysmal edema revealed by temporal lobe epilepsy in a case of unruptured internal carotid artery aneurysm treated with bare platinum coils.

We report the case of a patient with an unruptured internal carotid artery (ICA) aneurysm treated with bare platinum coils. The patient had seizures 1 month after treatment. Postoperative imaging showed perianeurysmal edema and enhancement of the aneurismal wall. After aneurysm coiling, perianeurysmal edema is an unusual complication that can be asymptomatic or cause symptoms depending on its location. Epilepsy as a clinical presentation of perianeurysmal edema has not previously been reported. Literature about post-embolization perianeurysmal edema is reviewed.