262he development of a second malignant neoplasm was about 10-40% in patients with head and neck squamous cell carcinoma (HNSCC). Metachronous second cancers most frequently involve the esophagus and lung, whereas synchronous second cancers are more common in head Second Primary Tumors in Patients with Head and Neck Cancer: A Retrospective Study from a Single Center A AB BS S T TR RA AC CT T O Ob bj je ec ct ti iv ve e: : Patients with squamous cell carcinoma of the head and neck are at risk for developing a second primary cancer. The aim of this study was to determine incidence and localization of second primary tumors. M Ma at te er ri ia al l a an nd d M Me et th ho od ds s: : Three hundred twenty-four patients with head and neck cancer diagnosed between 2000 -2010 were analyzed for the presence of a second malignancy. The data used in this study were obtained retrospectively from a database. R Re es su ul lt ts s: : A total of 324 patients were enrolled in this study, there were 248 males and 76 females ranging between the ages of 18 and 84 years, with a median age of 53 years. Ten patients (3.08%) had metachronous, three patients (0.93%) had synchronous cancers. In our study, 7.12% of the older population (>60 years) had second primary tumors, and 2.46% of the younger population (≤ 60 years) had second primary cancers. There were no statistical differences between two groups (p=0.07). Overall survival of patients with metachronous second primary cancers at 1 and 3 years were 87.5% and 62.5% respectively while these rates were 95.2% and 88.3% respectively in the ones without second primary cancers. C Co on nc cl lu us si io on n: : In our study, 4% of patients had second primary tumors. Screening programs were considered beneficial in high risk patients with head and neck cancers who smoke and use alcohol in order to detect second primary cancers.K Ke ey y W Wo or rd ds s: : Carcinoma, squamous cell of head and neck; neoplasms, second primary Ö ÖZ ZE ET T A Am ma aç ç: : Baş boyun skuamöz hücreli kanser hastaları, ikinci primer gelişimi açısından risklidir. Bu çalışmanın amacı, baş boyun kanserli hastalarda ikinci primer kanser insidansı ve lokalizasyonu araştırmaktır. G Ge er re eç ç v ve e Y Yö ön nt te em ml le er r: : Çalışmaya 2000 ile 2010 yılları arasında, Gazi Üniversitesi Hastanesi'nde baş boyun kanseri tanısı alan 324 hasta dahil edildi. Çalışmada retrospektif veri tabanı oluşturularak analiz yapıldı. B Bu ul lg gu ul la ar r: : Hastaların 248'i erkek, 76'sı kadındı. Ortanca yaş 53 yıl (18-84 yıl) olarak saptandı. Hastaların 10'unda (%3,08) metakron, 3'ünde (%0,83) senkron ikinci primer vardı. Yaşlı hastaların (> 60 yaş) %7,12'sinde, 60 yaş ve daha genç hastaların %2,46'sında ikinci primer kanser geliştiği gözlendi. Bu iki grup arasında istatistiksel fark yoktu (p=0,07). Ortanca sağkalım ikinci primer gelişen grupta 1 yıllık %87,5, 3 yıllık %62,5 iken, gelişmeyen grupta %95,2 ve %88,3 olarak bulundu. S So on nu uç ç: : Bu çalışmada %4 oranında ikinci primer kanser gözlendi. Sigara ve alkol kullanan...