The treatment of symptomatic unruptured aneurysms.

The authors analysed 99 cases of symptomatic unruptured aneurysms amongst 427 cases which were collected from a multi-center study of Japanese national hospitals. There were 20 cases of giant aneurysms and 19 cases of posterior fossa aneurysms. Overall postoperative morbidity was 16%, and postoperative morbidity for giant aneurysms was 26%. The treatment of giant aneurysms and posterior fossa aneurysms proved to be very difficult according to our study.