The risk of second primary tumors in patients with nasopharyngeal carcinoma after definitive radiotherapy

Abstract

SPTs in patients with NPC occurred preferentially in the UADT and tended to develop within the irradiated field >5 years after patients received radiation. Older patients with NPC (age >or=50 years) may be at increased risk. Further studies with larger samples and longer follow-up will be needed to confirm these findings.