Thirty patients with histologically proved craniopharyngiomas were controlled by CT after surgical excisions. Recurrence occurred in 70%. Of these tumours 33% were cystic, 30% were solid, and 12% were calcified. The ventricles were dilated in 67%, and postoperative cavities were found in 33%. The effectiveness of various forms of therapy has been monitored by CT. The purpose of our study is to investigate the value of early and long term CT scanning in craniopharyngiomas after surgical excision.