Abstract
Two patients with severe low back pain were finally diagnosed as multiple spinal metastasis of malignant tumors. They were revealed to have no malignancy by close examinations in an other hospital. So we started pain treatment without further examinations. But the epidural block was not as effective as usual and the pain was intensifying. As we suspected the presence of malignancy, close examinations were scheduled. However, their general conditions worsened suddenly, and they died a few weeks later after emergency admission. The spinal lesion was metastasis of lung cancer in both cases.
