[Invasive meningioma of the anterior cranial fossa. Report of 2 cases].
Two cases of falx-meningiomas are reported. In both cases there was tumor infiltration of the skull base, orbital caves and paranasal sinus at the time of diagnosis. The histological diagnoses were hemangiopericytic meningioma and atypical meningotheliomatous meningioma. Prognosis and therapy are briefly discussed.