[A successfully treated case of giant basilar artery aneurysm utilizing balloon catheter occlusion and brain protective substances].

A case of giant basilar artery aneurysm successfully treated utilizing balloon catheter under the administration of 20% mannitol, dexamethasone, vitamin E (Sendai Cocktail) is reported. The patient, 59 years old female, was admitted to our clinic with complaints of headache. CT scan revealed partially enhanced, round-shaped high density mass with a diameter of 35 mm in the left posterior part of the basal cistern. Vertebral angiography revealed aneurysm at the junction of left posterior cerebral artery and superior cerebellar artery. These findings indicate the partially thrombosed giant basilar artery aneurysm. Direct operation was performed just after the inflation of balloon within the aneurysm which made temporary occlusion of the aneurysm to make the operation safely. After removal of some amount of thrombosed aneurysm, temporary clips were applied on the basilar and bilateral posterior cerebral arteries, and then the neck of aneurysm was clipped. The combined use of the balloon, Sendai cocktail and temporary clips were recommended in such a case.