Abstract
OBJECTIVE: This study aimed to investigate clinical characteristics and prognosis of secondarily developed lung tumors in the cases having different system malignancy and to evaluate the relationship with the primary tumor.METHODS: Between January 2002- December 2010 thirty patients diagnosed as second primary lung cancer have been included in the study. The patients were grouped according to lung cancer development time; synchronous group (n: 7 patients, 16.7%) and metachronous group (n: 23 patients, 83.3%). RESULTS: Second cancer was detected in 50% of the patients within the first 2.5 years. Majority of patients had extra pulmonary cancer history concerning their relatives (43.3%). The rate of quitting smoking among all patients before the diagnosis of lung cancer was 50 %, current smoker rate was 30 % and never smoker was 20%. There was no statistical relationship between the response to treatment of first cancer and the duration of cancer developed secondarily (p=0.36). The overall survival of groups was found 24 months (95% confidence interval: 18.30 months) and 12 months (95% confidence interval: 10-14 months) respectively for synchronous and metachronous groups. CONCLUSION: Close follow-up on pulmonary system especially within the first 2.5 years after primary disease and encouragement on quitting smoking is important.
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