Research Institute of Oncology, Research Center, Russian Academy of Medical Sciences, Siberian Branch, Tomsk. Postoperative course was studied of stage III non-small cell lung cancer (35) treated radically using intraoperative radiotherapy (15Gy) and cisplatin radiosensitization. Postoperative complications were reported in 11.4 +/- 5.4%. Reduction in complication rates was due to the use of a combined treatment complex. There were no postoperative lethalities.