STAGING OF SUPRATENTORIAL HEMISPHERIC GLIOMA USING TUMOR EXTENSION, HISTOPATHOLOGICAL GRADE AND EXTENT OF SURGICAL RESECTION

A 'TGS' classification for supratentorial brain glioma is proposed, ba sed on three parameters: tumour extension (T), histopathological grade (G) and extent of surgical resection (S). Two groups of patients were analysed: the first (n = 137) had tumour submitted to stereotactic bi opsy; the second (n = 60) had malignant glioma operated on by cranioto my and tumour resection. All three staging parameters significantly in fluenced survival. Histopathological grade was the most significant fa ctor, and the only independent variable on multivariate analysis, foll owed by extent of tumour and then extent of surgical resection. The da ta support the applicability of the proposed parameters for a staging classification of hemispheric brain glioma.