Advances in chemotherapy achieved a high percentage of complete remission after primary cytostatic treatment in germinal testicular tumours. In 30-40% of patients in the IVth stage of the disease supplementary surgery is, however, necessary--retroperitoneal lymphadenectomy or metastasectomy of the lungs. The authors give an account of initial results of surgical removal of metastases in the lungs in seven patients of 48 treated with cytostatics on account of a germinal testicular tumour. The low risk of thoracotomy, if correctly indicated, justifies us to describe this operation not only as auxiliary but therapeutic.