Fifty-three patients with intracranial metastases from pulmonary carcinoma were treated with cranial irradiation between 1976 and 1983. There was improvement in neurologic symptoms in 80%, and the one and two-year survival rates for the entire group of patients were 21% and 4%. Those or patients without metastasis tumor in other organs were 38% and 9%, respectively. It was suggested that the total dose should be in excess of 40 Gy. Histologically, adenocarcinoma and epidermoid carcinoma showed better prognosis than other types of cancer.