Abstract
Controversy exists regarding the clinical characteristics, pathological findings, and prognosis of patients < 50 years of age with primary lung cancer. The medical records of 4,556 patients diagnosed with primary lung cancer between 1980 and 2004 were reviewed; of these, 305 were < 50 years old. Of 1,335 patients who were surgically treated, 122 were < 50 years old. Females were over-represented in the younger group. Younger patients had a significantly higher incidence of adenocarcinoma and large cell carcinoma, and a lower incidence of squamous cell carcinoma. The resectable rate in younger patients was significantly higher. Overall and among surgically treated patients, the survival rates of younger patients with stage 0-I disease were significantly better than those of older patients. Younger patients with early-stage primary lung cancer had a significantly better prognosis than older patients, although survival in the advanced stages was not significantly different.
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