[Surgical treatment of para-stem tumors by a transtentorial approach].

The scope of the interventions and their results, as well as some aspects of the approach are analyzed in 24 cases. Tentoriotomy from the posterior cranial fossa proved technically complicated; its results are unsatisfactory. Somewhat better results were obtained with a combined approach including an incision of the tentorium. The most favourable results were received with the supratentorial approach and incision of the cerebellar tentorium. This method created optimum conditions for a radical excision of some paratentorial tumours of the posterior cranial fossa with minimum mortality.