[Neoplastic metastasis in lungs simulating primary tumor of the respiratory system]

16 patients with clinical and radiological symptoms suggesting lung disease were described. Metastatic character of process was documented in 7 of them during life and in 9 after death. The pulmonary symptoms without any signs of primary tumor lasted from few months to 3 years. Two patients revealed primary tumor in ovary, 1-in uterus, 4-in thyroid gland, 2-in prostata, 2-in breast, 2-in pancreas, 1-in bone, one in testicle, and 2-in kidney.