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Yildirim HC, Kupik GE, Mustafayev TZ, Berber T, Yavuz B, Cetinayak O, Akagunduz O, Bıcakcı BC, Arslan SA, Soykut ED, Gundog M, Figen M, Teke F, Canyilmaz E, Birgi SD, Duzova M, İgdem S, Abakay CD, Atasoy B, Kaydihan N, Parvizi M, Uslu GH, Saginc H, Akman F, Ozyar E. A multicenter retrospective analysis of patients with nasopharyngeal carcinoma treated in IMRT era from a nonendemic population: Turkish Society for Radiation Oncology Head and Neck Cancer Group Study (TROD 01-001). Head Neck 2023; 45:1194-1205. [PMID: 36854873 DOI: 10.1002/hed.27333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 02/08/2023] [Accepted: 02/14/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND We aimed to evaluate patients with nasopharyngeal carcinoma (NPC) in a nonendemic population. METHODS In a national, retrospective, multicenteric study, 563 patients treated with intensity modulated radiotherapy at 22 centers between 2015 and 2020 were analyzed. RESULTS Median age was 48 (9-83), age distribution was bimodal, 74.1% were male, and 78.7% were stage III-IVA. Keratinizing and undifferentiated carcinoma rates were 3.9% and 81.2%. Patients were treated with concomitant chemoradiotherapy (48.9%), or radiotherapy combined with induction chemotherapy (25%) or adjuvant chemotherapy (19.5%). After 34 (6-78) months follow-up, 8.2% locoregional and 8% distant relapse were observed. Three-year overall survival was 89.5% and was lower in patients with age ≥50, male sex, keratinizing histology, T4, N3 and advanced stage (III-IVA). CONCLUSIONS Patients with NPC in Turkey have mixed clinical features of both east and west. Survival outcomes are comparable to other reported series; however, the rate of distant metastases seems to be lower.
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Affiliation(s)
- Halil Cumhur Yildirim
- Department of Radiation Oncology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Gulnihan Eren Kupik
- Department of Radiation Oncology, Faculty of Medicine, Mugla Sitki Kocman University, Mugla, Turkey
| | - Teuta Zoto Mustafayev
- Department of Radiation Oncology, Faculty of Medicine, Acibadem University, Istanbul, Turkey
| | - Tanju Berber
- Department of Radiation Oncology, Prof Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey
| | - Berrin Yavuz
- Department of Radiation Oncology, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Oguz Cetinayak
- Department of Radiation Oncology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Ozlem Akagunduz
- Department of Radiation Oncology, Faculty of Medicine, Ege University, Izmir, Turkey
| | | | | | - Ela Delikgoz Soykut
- Department of Radiation Oncology, Samsun Education and Research Hospital, Samsun, Turkey
| | - Mete Gundog
- Department of Radiation Oncology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Metin Figen
- Department of Radiation Oncology, Sisli Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey
| | - Fatma Teke
- Department of Radiation Oncology, Faculty of Medicine, Dicle University, Diyarbakır, Turkey
| | - Emine Canyilmaz
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Teknik University, Trabzon, Turkey
| | - Sumerya Duru Birgi
- Department of Radiation Oncology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Mursel Duzova
- Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Sefik İgdem
- Department of Radiation Oncology, Gayrettepe Florence Nightingale Hospital, Istanbul Bilim University, Istanbul, Turkey
| | - Candan Demiroz Abakay
- Department of Radiation Oncology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Beste Atasoy
- Department of Radiation Oncology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Nuri Kaydihan
- Department of Radiation Oncology, Istanbul Bahcelievler Memorial Hospital, Istanbul, Turkey
| | - Murtaza Parvizi
- Department of Radiation Oncology, Manisa City Hospital, Manisa, Turkey
| | - Gonca Hanedan Uslu
- Department of Radiation Oncology, Trabzon Kanuni Education and Research Hospital, Trabzon, Turkey
| | - Halil Saginc
- Department of Radiation Oncology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Fadime Akman
- Department of Radiation Oncology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Enis Ozyar
- Department of Radiation Oncology, Faculty of Medicine, Acibadem University, Istanbul, Turkey
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