Laser photodynamic therapy as a new method in treatment of the patients with malignant gliomas of brain

In the Clinic of Neurosurgery of Novosibirsk RITO 126 patients with basal meningioma of various localization were operated on during last 6 years. In 87 patients the tumor removal was performed with infra-red (Nd-YAG) laser with a wavelength of 1,06 microns. The laser functioned in an impulse-periodic mode with pulse duration of 200 mk sec, laser radiation frequency of 100 Hz, and power of 10-55 W. The use of the developed original laser technologies at a stage of basal meningioma rnicrosurgical removal in a mode of coagulation and ablation, always allowed us to remove the tumor totally, to avoid additional lesion of the adjacent brain and massive blood loss.