[Postoperative complications in space occupying processes of the base of the skull].

Tumours of the skull base become manifest by the nervous structures surrounding them. After the removal of the tumour, the complications are produced by the same disturbed structures. Proceeding under microsurgical conditions will reduce both the risk of subsequent haemorrhages in patients with olfactory--groove meningiomas and central disturbances of the respiratory and circulatory--functions.