ABSTRACT
Fifty-five patients with brain lesions were treated with gamma knife combined with stereotaxic technique. There were 33 males and 22 females, and their age ranged from 12 to 72, averaged 41 years. The lesions were located in the sellar area in 21 patients, in the deep cerebrum in 10,in the basal ganglion in 9, in the cerebellum in 5, in the brain stem in 4. Intracranial multiple lesions were found in 6 patients. Twenty-four patients were treated with gamma knife combined with stereotaxic biopsy, 21 with gamma knife combined with stereotaxic aspiration for the cyst and 8 with gamma knife combined with stereotaxic biopsy and aspiration. In the other 2 cases, conservative therapy was used because their pathogenesis was parasite and abscess. Of the 47 biopsies, glioms were diagnosed pathologically in 15 cases, metastasis in 9, craniopharyngioma in 7, pituitary adenoma in 4, germinoma in 3, other tumor in 4, parasite in 1 and abscess in 1. The biopsy positive rate was 93.6%. Aspirated cytic fluid ranged from 1 to 30ml, and the symptoms improved dramatically after aspiration. There were no severe complications and deaths related to stereotaxic procedures. It suggested that gamma knife combined stereotaxic technique is a useful and safe procedure for neuropathological diagnosis and an appropriate management for certain brain lesions.