Thoracic Spinal Intramedullary Arachnoid Cyst Presented with Myelopathy with Marked Postoperative Improvement: A Case Report and Review of Literature.

Intramedullary spinal cord arachnoid cysts are rare. So, we present an interesting case of adult male presented with myelopathic symptoms and signs. Further investigations revealed a finding of thoracic intramedullary cystic lesion, found postoperatively to be an arachnoid cyst.