Trends and Developments: Giant Aneurysms in the Cavernous Sinus

Abstract

Intracranial aneurysms arising within the cavernous sinus have a significantly different course and prognosis to other intracranial aneurysms. The authors report II cases of giant intracavernous aneurysms which presented to the ophthalmologist with visual signs. Eight patients out of II underwent treatment. Five of these improved with treatment, one remained unchanged and two patients suffered additional neurological effects. Untreated two patients improved spontaneously, and one remained unchanged. In view of the prognosis for untreated intracavernous aneurysms it is suggested that treatment should be recommended but adverse effects may occur. The mechanisms for cranial nerve palsies are discussed.

Key Words:

• Giant aneurysm
• cavernous sinus
• carotid ligation
• balloon occlusion