Survival in Granular Cell Astrocytomas

Abstract

Background Granular cell astrocytomas (GCAs) are rarely encountered aggressive glial neoplasms. Treatment options comprise surgery, radiotherapy, and chemotherapy. Due to the small number of cases, a standard therapeutic regimen for GCA does not exist.

Material and Methods We report on the case of a 64-year-old woman with GCA subjected to tumor biopsy followed by radiochemotherapy with temozolomide. We provide clinical, histopathologic, and magnetic resonance imaging findings as well as a complete follow-up. To assess the relation of age, gender, time of publication, and different treatment options with survival we performed log-rank tests and calculated Cox regression models and hazard ratios in data from all available reports on GCA.

Results A significant difference in survival rates in favor of adjuvant therapy (radiotherapy or radiochemotherapy) at 12 months was found. Age > 70 years at the time of diagnosis had a significantly unfavorable impact on survival at 12 months. Although not statistically significant, a tendency toward higher probability of survival at 12 months was found in cases reported after 2002. In surgically treated patients, we could not find a significant impact of extent of resection on survival. A significant impact of gender on survival was not found.

Conclusion Adjuvant therapy is significantly related to a higher probability of survival at 12 months and may therefore be recommended for patients with a GCA. Further analysis of these rare neoplasms is warranted.

Keywords

granular cell astrocytoma - adjuvant therapy - survival

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