Abstract

Spinal astrocytoma is a rare neoplasm with discouraging prognosis, which accounts for 6–8 % of total intramedullary spinal tumors. As this is a rare entity, details of the clinical and molecular features have not been fully unraveled. We evaluated the radiologic findings, perioperative clinical presentation, histopathological features and treatment response in a single institution series of 37 consecutive cases of spinal astrocytomas (WHO grades 1 to 4).We identified 8, 16, 8, and 5 patients with grade 1, 2, 3, and 4 lesions, respectively, from 1988 to 2017. Peak ages were youngest in grade 1, followed in order by grades 4, 3 and 2. Whereas all cases of grade 1 and 4 enhanced with contrast, less than half of the cases of grade 2 tumors enhanced (44 %). Grade 3 tumors had a higher rate of multiplicity at presentation (50 %). A concomitant brain lesion at presentation was present in 14 % and 43 % of grade 2 and 3 lesions, respectively. Progression-free and overall survival were worse in grades 3 and 4 compared to grade 2 lesions but no significant difference was observed between grade 3 and 4. Many patients (16-of-36) experienced new neurological deficits postoperatively regardless of grade. Most patients (88 %) required postoperative rehabilitation, and 61 % were not discharged to home. Discharge destination closely correlated with age (p = 0.002). These clinical findings may be useful in understanding the clinical phenotype and improving the management of this rare disease.

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