Abstract
Background
We evaluated the efficacy and toxicity of reirradiation for patients with loco-regional relapse of non-small-cell lung cancer after radiation therapy.
Methods
Between 1992 and 2002, 19 patients with loco-regional relapse underwent reirradiation. The median interval between the initial irradiation and reirradiation was 16 months, with a range of 5 to 60 months. The prescribed dose of reirradiation was 50 Gy in 25 fractions over 5 weeks for 18 patients and 60 Gy in 30 fractions over 6 weeks for 1 patient.
Results
Five patients could not receive the prescribed dose of reirradiation. The response rate was 43% among the 14 patients who received the prescribed dose of reirradiation. The overall 1-year and 2-year Kaplan-Meier survival rates were 26% and 11%, respectively, and the median survival time was 7.1 months. The median survival times associated with intervals between the initial irradiation and reirradiation of less than 12 months, 12–18 months, and more than 18 months were 2.1, 7.1, and 11.5 months, respectively. There were significant differences in survival between patients with an interval of less than 12 months and those with an interval of 12–18 months, and between those with an interval of less than 12 months and those with an interval of more than 18 months (generalized Wilcoxon method; P < 0.05 for both). Grade 3 radiation pneumonitis and grade 2 radiation esophagitis occurred in 1 and 3 patients, respectively.
Conclusion
Reirradiation is considered to contribute to salvage in selected patients with relapsed non-small-cell lung cancer. Patients with a long interval after the initial irradiation are good candidates for reirradiation. On the other hand, patients with Eastern Cooperative Oncology Group (ECOG) performance status 3 were not goodcandidates.
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Tada, T., Fukuda, H., Matsui, K. et al. Non-small-cell lung cancer: reirradiation for loco-regional relapse previously treated with radiation therapy. Int J Clin Oncol 10, 247–250 (2005). https://doi.org/10.1007/s10147-005-0501-1
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DOI: https://doi.org/10.1007/s10147-005-0501-1