Analyses of the 45 recurrent cases of supratentorial astrocytomas In this study forty-five cases of supratentorial diffuse infiltrative astrocytoma which were diagnosed and followed up in Hacettepe University, Faculty of Medicine between the years of 1984-1995, are reviewed to observe the prognostic significance of age and sex of the patients, the localization and grade of the tumors and the duration of the symptoms. After having received chemotherapy and radiotherapy, the morphological changes within the tumor and the nonneoplastic brain parenchyma is observed.