Abstract
A 49-year-old man was admitted to our hospital suffering from right ophthalmic pain and incomplete oculomotor palsy. Neuroradiological examination revealed a partially thrombosed, large aneurysm at the right BA-SCA junction. Surgical neck ligation of the aneurysm, followed by endovascular packing using GDC, was effective in tis case. A combination of operative and endovascular techniques in a complementary was, may result in the best possible outcome for patients with partially thrombosed large aneurysms in the posterior fossa.