[Toxic effect of radiotherapy on metastatic lesions of the lung].

The study was concerned with identifying toxic effect of certain methods of radiotherapy of metastatic lesions of the lung. Leukocyte index intoxication (Kalf-Kalif), paramecin test and mean molecule level determination were used. The worst endogenous intoxication was found to be caused by irradiating four consecutive fields of the mediastinum. The least damage was caused in combination with artificial pneumothorax. Use of smaller-size fields of irradiation was followed by a significant drop in adverse side-effects.