Intramedullary tumours and tumour mimics

Area of Science:

• Neurology
• Radiology
• Oncology

Background:

• Spinal cord lesions are classified by location: extradural, intradural extramedullary, or intramedullary.
• Intramedullary spinal cord tumors share histopathology with cranial tumors, exhibiting diverse origins.
• Astrocytomas and ependymomas constitute 80% of intramedullary tumors; the remaining 20% include primary and secondary lesions.

Purpose of the Study:

• To review the spectrum of intramedullary tumors and their mimics.
• To emphasize the role of imaging findings in diagnosis.
• To highlight challenges in differentiating neoplastic from non-neoplastic intramedullary lesions.

Main Methods:

• Review of existing literature on intramedullary spinal cord lesions.
• Emphasis on magnetic resonance imaging (MRI) characteristics.
• Comparison of imaging findings for tumors versus non-neoplastic mimics.

Main Results:

• Magnetic resonance imaging is the primary diagnostic tool for spinal cord lesions.
• Accurate histological characterization of intramedullary tumors via imaging can be difficult.
• Non-neoplastic lesions (demyelinating, vascular, inflammatory, infectious, traumatic) can mimic intramedullary tumors.

Conclusions:

• Distinguishing intramedullary tumors from mimics requires careful interpretation of imaging findings.
• A comprehensive understanding of imaging features is crucial for accurate diagnosis.
• Further research may improve the differentiation of these lesions.