Abstract
The objective of the present study was to evaluate the feasibility and toxicity of a preoperative alternating chemotherapy and radiotherapy program followed by surgery in stage IIIA non-small cell lung cancer (NSCLC). The tumor response, resection rate, tumor/lymph node downstaging, and survival were also evaluated. The positive predictive value (PPV) in the diagnosis of mediastinal lymph node metastasis was 81% using conventional magnetic resonance imaging (MRI) with short inversion-time inversion recovery (STIR) technique (STIR-MRI) on our criteria. Eligible patients had clinical N2 lesions (stage IIIA) and a World Health Organization (WHO) performance status of 0–2. The treatment program consisted of two courses of preoperative cisplatin, vindesine, and ifosfamide; alternating with radiotherapy, including two courses of 20 Gy radiation. Surgery was performed within 4 weeks after the treatment. Twenty-two patients with stage IIIA (N2) NSCLC (20 men and two women, age 35–71 years) were enrolled into the study. Hematologic and other toxicities were within an acceptable range. Surgery was not indicated for two patients because of distant metastasis; one patient with renal dysfunction and one with pancytopenia during this treatment underwent surgery subsequently. The clinical response rate was 50% (partial response in 11/22). Definitive surgery was indicated for 18 patients resulting in 17 patients with complete resection and one exploratory thoracotomy. A pathologic complete response of the primary tumor occurred in 41% of the patients (seven of 17; without residual tumor), whereas 58% (ten of 17) were pathologic N0. The median survival was 33 months with an actuarial 4-year survival rate of 33% in 17 patients with complete resection and 30 months with 28% 4-year survival rate in all entered patients. A randomized phase-III study using this approach for stage IIIA (clinical N-2 disease) is warranted.
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