[Reirradiation of spine and lung tumor with CyberKnife]

We present the results of two retrospective studies, one regarding reirradiation of spinal tumours and the second, concerning lung tumours. In the first case, primary or secondary tumours were located in or in contact with the vertebrae and spinal cord. The first irradiation has given a full dose to the spinal cord. In the second case, primary or secondary lung tumours have already been treated by irradiation alone or by radiochemotherapy. No grade 3 or 4 early toxicity has been found. Preliminary clinical results are encouraging. The use of CyberKnife represents a major therapeutic advance in the management of irradiated spinal or lung lesions. The possibility of sparing organs at risk and increasing the dose in the tumour target volume are the main advantages.