Endovascular treatment of carotid cavernous fistulas (CCFs) presents many t
echnical difficulties and hazards, some unique to each patient. This report
details some of the difficulties encountered in the treatment of a 63-year
-old patient with a CCF and an ipsilateral internal carotid artery dissecti
on. After failure of conventional techniques using a detachable balloon, co
mplete closure of the CCF was achieved by transvenous coil embolization whi
le the arterial lumen was protected by a nondetachable balloon catheter.