Cauda equina cavernous angioma presenting as acute low back pain and sciatica. A report of two cases and literature review.

Spinal cavernous angiomas are rare vascular lesions occurring mainly in the vertebral bodies extending secondary into the extradural space. Only 3% of these lesions are intradural, usually localized within the spinal cord. Rarely, cavernous angioma has been reported to occur in the cauda equina. We describe clinical, diagnostic imaging, and surgical procedures of two cases of cavernous angioma of the cauda equina who presented with acute back pain and sciatica. The relevant literature is also reviewed.