Primary Spinal Astrocytomas: A Literature Review

Area of Science:

• Neuro-oncology
• Neurosurgery
• Spinal Cord Imaging

Background:

• Primary spinal astrocytoma is the most common intradural intramedullary spinal cord tumor, a subtype of glioma.
• These tumors are typically low-grade (World Health Organization grade I or II) and affect both adults and children.
• Common symptoms include back pain, sensory, and motor dysfunction.

Purpose of the Study:

• To review the characteristics, diagnosis, and treatment of primary spinal astrocytomas.
• To discuss prognostic factors and current treatment modalities for spinal astrocytomas.

Main Methods:

• Review of literature on primary spinal astrocytomas.
• Discussion of diagnostic imaging, including Magnetic Resonance Imaging (MRI), computerized tomography, diffusion tensor imaging, and tractography.
• Analysis of treatment strategies, including surgical resection, radiation, and chemotherapy.

Main Results:

• MRI reveals characteristic T1 hypointense and T2 hyperintense lesions with heterogeneous enhancement.
• Factors associated with poor prognosis include older age, higher tumor grade, and less extensive resection.
• Surgical resection is the primary treatment, aiming to preserve neurologic function.

Conclusions:

• Primary spinal astrocytomas are rare and challenging tumors requiring a multidisciplinary approach.
• Surgical resection is the gold standard treatment, often supplemented by radiation therapy to improve survival.
• The role and optimal regimen for adjunctive chemotherapy remain undefined.