The efficacy and toxicity of concurrent chemoradiotherapy with carboplatin (AUC=5) +docetaxel (70 mg/m(2)) were analyzed retrospectively in 20 patients with stage III non-small-cell lung cancer (NSCLC). The median age of the patients was 65 years (range, 53-73 years). The performance status (ECOG), clinical stage, and tumor histology of the patients were as follows: PS: PS 0, 12 patients; PS 1, 8 patients; disease stage: stage III A, 6 patients; stage III B, 14 patients; tumor histology: adenocarcinoma, 11 patients; squamous cell carcinoma, 6 patients; large cell carcinoma, 3 patients. The median number of treatment courses administered was 4. The median survival time was 23 months, and the 2-year survival rate was 50%. The median progression free survival was 17.5 months. The response rate was 75%. Common toxicities included grade 3/4 neutropenia (95%), grade 3 esophagitis (5%), grade 3 anorexia (30%), grade 3 febrile neutropenia (35%) and grade 5 radiation pneumonitis (5%). Further studies are warranted to evaluate the efficacy and toxicity of this regimen.