Abstract
Long-term follow-up results were analysed in 29 cases of spontaneous carotid-cavernous fistulas. All were low flow type of spontaneous carotid-cavernous fistulas, and were treated with conservative therapy.
A complete regression of symptoms was noted in 25 cases, and a moderate regression in 4 cases. The regression of symptoms was usually delayed in patients less than 59 years old, and in cases with multiple draining veins.
Conjunctival injection was usually recognized within one month after the onset and disappeared more than one year later. Diplopia and blepharoptosis were usually recognized within one month after the onset and disappeared in 6-12 months. Exophthalmos and tinnitus were usually recognized within one year after the onset and disappeared within one year. Visual disturbance was usually recognized more than one year after the onset and disappeared within one year after the appearance.
From these results, it is seen that spontaneous carotid-cavernous fistulas show a very high incidence of spontaneous regression of symptoms, and conservative treatment is initially recommended.
