In two women, aged 86 and 56 years, respectively, who suffered from back pain and loss of strength, and in a 55-year-old man who lost sensation and strength in his left leg, spinal-cord compression in connection with vertebral destruction was seen on radiological examination. When spinal-cord compression is the result of a local malignant tumour, the therapy often entails emergency radiotherapy. In the first two patients, histological examination revealed a solitary plasmocytoma and curative high-dose radiotherapy was applied. The third patient also had a lung tumour and received low-dose palliative radiotherapy to the vertebrae, as a metastasis was suspected. Later, however, histopathologic examination of the vertebral lesion revealed osteomyelitis due to Listeria monocytogenes and the lung tumour was diagnosed as a pT2N0M0 broncho-alveolar carcinoma which was surgically removed. When a patient is referred with a nontraumatic spinal-cord injury, it is important to complete the radiological and histological examinations before starting emergency radiotherapy in order to prevent an inadequate or even incorrect treatment.