Long-term follow-up results of 175 patients with malignant glioma: Importance of radical tumour resection and postoperative adjuvant therapy with interferon, ACNU and radiation

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Abstract
We analysed long-term follow-up results of 175 patients with malignant glioma (110 glioblastoma and 65 anaplastic astrocytoma) treated under five different regimes during the past two decades. The factors of age (less than 40), histology (anaplastic astrocytoma) and type of adjuvant therapy (radiation and chemotherapy) contributed to long survival. The other important factor was the response to adjuvant therapy. Cases of gross total removal or complete response (CR) of a residual tumour to an adjuvant therapy showed a better prognosis. The three and five year survival rate was 42% and 24%, respectively. The highest CR ratio (23%) was seen in patients treated by intravenous injection of interferon and ACNU in addition to radiotherapy (IAR therapy).