RESUMO
INTRODUCTION: The development of second primary tumors (SPT) in patients with head and neck squamous cell carcinoma (HNSCC) has become an increasingly important factor in clinical treatment decisions. PURPOSE: To define favourable clinical characteristics for overall survival, in patients with SP head and neck cancer. MATERIAL AND METHOD: Records of 633 patients with SCC treated from 1984 to 2004 were reviewed to describe clinical characteristics of the SPT. RESULTS: The overall incidence of SPT was 11%. The incidence of the index tumors was as follows: supraglottic cancer 21% and oral cancer 16%. The most common SPT occurred in head and neck area in 47%, lung in 32% and esophagus in 11%. Second primary was associated with a poor 5 years survival in patients with HN-SCC (23 versus 53% in control group). CONCLUSION: Because of the high rate of second primary tumors, protocols including chemoprophylaxis should be investigated. Prevention and early detection are indicated.
