RESULTS OF 200 INTRACRANIAL STEREOTAXIC BIOPSIES

200 stereotactic biopsies were evaluated. The validity of the intraope rative histopathological results were compared with the final diagnosi s using conventional embedding and staining techniques. Further compar ison between the histology of the biopsy and the post mortem or open o perative findings were possible in 41 cases. Discrepancy was found in one case regarding the tumor detection, and in three cases regarding t he tumor grading. The mortality in our patients was 1% and the morbidi ty 3%. Stereotactical biopsy had a low risk even in deep brain regions such as basal ganglia, mesencephalon, and pons. At the same time the high histologic validity makes the CT-guided stereotactical biopsy rec omendable in all lesions not operated by an open resection before any conservative or palliative therapy is started.