Intradural sacral nerve root metastasis mimicking herniated disc. Case report.

Spinal tumors may mimic herniated discs but the neurological findings and radiographs usually indicate the correct diagnosis. A case of metastasis to the S-1 intradural nerve rootlets is reported, with symptoms closely simulating a herniated disc. The correct diagnosis could not be made preoperatively in spite of clinical suspicion of a tumor.