Time trends and survival in patients presented for surgery with non-small-cell lung cancer 1969–1985

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Abstract
All evaluable patients (n = 920) with primary non-small-cell lung cancer(NSCLC) who were presented for surgery in our hospital between 1969 and1985 were reviewed as to histological findings, postoperative stage, agegroup and surgical procedure. Time trend analyses showed a significantincrease over time in the proportion of adenocarcinomas (p = 0.025) and inthe proportion of the elderly (greater than or equal to 70 years; p =0.014). The 5-year survival rates by year of operation showed noimprovement at all over time; on the contrary they showed a decline, whichhowever only reached significance for patients who underwent pneumonectomy(p = 0.034). It is noted that the overall survival curves up to 5 yearsshowed no significant differences between patients with adenocarcinoma andpatients with squamous cell carcinoma, or between patients aged 70 years ormore and patients aged 60-69 years. Despite expanded preoperativediagnostic techniques and developments in surgical treatment, noimprovement in the survival after surgery for NSCLC over the period1969-1985 could be established.

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