Stereotactic CT localization and biopsy of brain tumours using the Leksell frame. A study of 45 cases.

The authors have explored 45 patients presenting with clinical and CT evidence of space-occupying process in the brain. They endeavoured to determine the nature of the processes by performing stereotactic biopsy after localization by CT in 43 cases, by magnetic resonance imaging in 2 cases and by angiography in 1 case. The method proved reliable: the quality of the biopsy specimens obtained enabled the pathologist to make a satisfactory diagnosis by light microscopy after freezing in almost every case.