Unexpected diagnosis of spinal leptomeningeal metastatic disease on MRI myelography.

We present a case of leptomeningeal metastatic disease to the cauda equina detected on Magnetic Resonance myelography. The heavy T2-weighting and small field-of-view of this MRI technique are designed to detect CSF leaks, but also provide exquisite detail of the cauda equina and any associated nodularity. Magnetic Resonance myelography thus shows promise as an adjunct to the MRI evaluation of patients with suspected leptomeningeal metastatic disease and other tumours affecting the cauda equina.