From Jan. 1987 to Dec. 1988, a total of 230 patients (135 lung cancer, 95 breast cancer) were treated by irradiation. The frequency of radiation pneumonitis was 5.1%(7/135) in lung cancer and 3.1%(3/95) in breast cancer. The frequency of lung cancer (n=16) complicated with pleunal effusion and treated by whole chest moving-strip irradiation was 31.2%(5/16) as compared with 2.3%(5/214) in those treated by the conventional radiation. The incidence of radiation pneumonitis was related to dose in the target volume, area of radiation and chemotherapy before radiotherapy.

From Oct. 1985 through 1989, 38 patients with malignant pleural effusion were treated with 60Co moving strip technic. Complete response was 19/38 and marked response 10/38. The 1-,2-, and 3-year survival rates were 42.9%, 33.2% and 4.8% in radiation only group. The 1-, 2-, and 3 year survial rates were 47.1%, 35.3%, 11.8% in radiation combined with chemotherapy group. It is proved that radiation be surperior to intracavitary chemotherapy or radiation combind with systemic chemotherapy. This treatmet is safe and well tolerated by patients.