[Evaluation of laser surgery against brain tumor (author's transl)]

A surgical carbon dioxide laser unit (Laser) has been used in 26 cases of various brain tumors, including 10 meningioma (4 sphenoid ridge, 3 parasagittal, 1 falx, 1 olfactory, 1 posterior fossa); 12 glioma (7 glioblastoma, 5 astrocytoma); two metastatic brain tumors; 1 hemangioblastoma, and 1 AVM. Criteria for Laser use based on evaluation and location of meningioma were: grade 1, convenient but adjuvant; grade 2, also necessary; grade 3, indispensable. Most meningioma in convexity and parasagittal were grade 1-2, with those in the sphenoid ridge grade 2-3. In the glioma group, hemorrhage in 3 cases of glioblastoma was easily Laser-controlled, and the tumors wasted away in a short time with vaporization. There was minimal mechanical effect on the adjacent tissue.

In neurosurgery, Laser is obligatory in sphenoid ridge meningioma to dissect the internal carotid artery, middle cerebral artery, cavernous sinus, sphenoid ridge, etc. It is very useful in glioma, especially glioblastoma, considering shortened surgical duration, decreased blood loss and extended tumor resection. Laser surgery is proposed as most appropriate for brain tumors in elderly and poor risk cases mainly for its vaporizing function.