Spinal pain made worse by recumbency: a clue to spinal cord tumors.

In the absence of physical findings, pain in the low back, cervical or thoracic spine, or the extremities presents a diagnostic problem. On occasion the pain is present or made worse only when the patient lies down. We have attended four patients with underlying extradural tumors of the spinal canal. A 75-year-old woman with chronic back pain was treated for multiple myeloma with intravenous dexamethasone and 400 rads of x-ray irradiation to the lumbar spine and experienced marked pain relief in 24 hours. A 76-year-old woman with neck pain had complete pain relief after a vascular, calcified meningioma was removed surgically from under the 2nd and 3rd cervical nerve roots. A 38-year-old male with constant pain in the lumbar area and right leg and foot experienced marked relief from pain after a neurolemmoma of the cauda equina was surgically removed. A 57-year-old woman with knee pain became pain free 24 hours after radiation therapy to an enlarged nodular cauda equina. These four cases illustrate a diagnostic clue rarely mentioned in the literature.