The Efficacy of Induction Chemotherapy in Stage lll Non-Small Cell Lung Cancer / 대한방사선종양학회지

ABSTRACT

PURPOSE: This study was performed to analyze the efficacy of induction chemotherapy followed by radiation therapy in locally advanced non-small cell lung cancer. MATERIALS AND METHODS: Eighty patients with locally advanced non-small cell lung cancer treated from 1989 to 1995 at Pusan Paik hospital were analyzed retrospectively. Twenty-one patients were treated with induction chemotherapy followed by radiation therapy and Fifty-nine patients were treated with radiation therapy alone. Chemotherapy regimen consisted of cisplatin-based combination (2 or 3 drugs). All patients were treated by Co-60 or 6 MV linear accelerators. Radiation dose ranged from 50 Gy to 80 Gy (median, 64.8 Gy). We evaluated response rate, survival rate, and pattern of failure in both treatment groups. RESULTS: Overall response rate in induction chemotherapy group and radiotherapy alone group were 48% and 45%, respectively. Of the 80 patients, 46 patients were evaluable for pattern of failure. Initial failure pattern in induction chemotherapy group was as follows 8 (67%) at locoregional, 4 (33) in distant metastasis. Radiation alone group was 21 (71%) and 5 (29%), respectively. Results showed no difference of distant failure between induction chemotherapy group and radiation alone group. The 1 and 2 year survival rate in induction chemotherapy group were 43% and 14%, respectively and in radiotherapy alone group, 31% and 7%, respectively (p=0.135). CONCLUSION: In stage lll non-small cell lung cancer, induction chemotherapy and radiation therapy showed increased tendency in survival with no statistical significance. Induction chemotherapy seems to have no effect of decreasing distant failure and no survival advantage compared with radiotherapy alone.