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Fushimi C, Takahashi H, Kawakita D, Kano S, Tsukahara K, Ozawa H, Okami K, Sakai A, Yamazaki K, Okada T, Hanazawa T, Sato Y, Imanishi Y, Shimizu A, Matsuki T, Nagao T, Tada Y. Brain metastases in patients with salivary duct carcinoma: A retrospective study. Cancer Med 2024; 13:e7037. [PMID: 38477487 DOI: 10.1002/cam4.7037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/19/2023] [Accepted: 01/02/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Salivary duct carcinoma (SDC) is a high-grade adenocarcinoma with a 5-year survival rate of 40%. Although drug therapy has improved patients' prognosis, the impact of brain metastasis (BM) remains poorly understood. We aimed to retrospectively examine the incidence of BM in patients with SDC (n = 464) and develop a tool to estimate their prognoses. METHODS We retrospectively examined 464 patients with SDC enrolled in a multicenter study. We investigated the incidence of BM, overall survival (OS) rates, and factors affecting prognosis in patients with BM. We also developed an SDC-graded prognostic assessment (GPA) score for disease prognostication. RESULTS Sixty-five (14%) patients had BM. The median OS (mOS) was 13.1 months. On univariate and multivariate analyses, factors such as Eastern Cooperative Oncology Group Performance Status >1, human epidermal growth factor receptor 2-negative status, and locoregional uncontrolled disease were associated with poor OS. SDC-GPA scores according to the prognostic factors were 0, 1, 2, and 3 points, and mOS estimates were 50.5, 16.1, 3.9, and 1.2 months, respectively (p < 0.001). CONCLUSION The SDC-GPA score emerged as a useful prognostication tool for patients with BM.
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Affiliation(s)
- Chihiro Fushimi
- Head and Neck Oncology and Surgery, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
- Department of Head and Neck Surgery, National Cancer Center Hospital, Tokyo, Japan
| | - Hideaki Takahashi
- Department of Otorhinolaryngology, Head and Neck Surgery, Yokohama City University, School of Medicine, Yokohama, Japan
| | - Daisuke Kawakita
- Department of Otorhinolaryngology, Head and Neck Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Satoshi Kano
- Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kiyoaki Tsukahara
- Department of Otorhinolaryngology, Head and Neck Surgery, Tokyo Medical University, Tokyo, Japan
| | - Hiroyuki Ozawa
- Department of Otorhinolaryngology Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kenji Okami
- Department of Otolaryngology Head and Neck Surgery, Tokai University School of Medicine, Isehara, Japan
| | - Akihiro Sakai
- Department of Otolaryngology Head and Neck Surgery, Tokai University School of Medicine, Isehara, Japan
| | - Keisuke Yamazaki
- Department of Head and Neck Surgery, Niigata Cancer Center Hospital, Niigata, Japan
| | - Takuro Okada
- Department of Otorhinolaryngology, Head and Neck Surgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Toyoyuki Hanazawa
- Department of Otolaryngology, Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yuichiro Sato
- Department of Head and Neck Surgery, Niigata Cancer Center Hospital, Niigata, Japan
| | - Yorihisa Imanishi
- Otorhinolaryngology, Head and Neck Surgery, International University of Health and Welfare, Narita Hospital, Chiba, Japan
| | - Akira Shimizu
- Department of Otorhinolaryngology, Head and Neck Surgery, Tokyo Medical University, Tokyo, Japan
| | - Takashi Matsuki
- Department of Otorhinolaryngology, Head and Neck Surgery, Kitasato University School of Medicine, Kanagawa, Japan
| | - Toshitaka Nagao
- Department of Anatomic Pathology, Tokyo Medical University, Tokyo, Japan
| | - Yuichiro Tada
- Head and Neck Oncology and Surgery, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
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Shi J, Fan Y, Long J, Zhang S, Zhang Z, Tang J, Chen W, Liu S. Development and Validation of Nomograms to Predict Risk and Prognosis in Salivary Gland Carcinoma Patient with Distant Metastases. EAR, NOSE & THROAT JOURNAL 2023:1455613231212060. [PMID: 38044557 DOI: 10.1177/01455613231212060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023] Open
Abstract
Background: Salivary gland carcinoma (SGC) patients with distant metastasis (DM) are rare, and understanding this disease is insufficient. Nomograms can predict the prognostic probability of patients, while few studies have examined diagnostic and prognostic factors in SGC patients with DM. The purpose of this study was to establish and validate the risk and prognostic nomograms of SGC patients with DM. Methods: Based on the SEER database, we analyzed the data of SGC patients between 2004 and 2015. Logistic regression analyses and Cox proportional hazards regression analyses were used to identify risk and prognostic factors for DM in SGC patients. Based on the Akaike information criterion (AIC) value and likelihood ratio test, the best-fitting model was selected to build risk and prognostic nomograms, and the results were evaluated by receiver operating characteristic (ROC) curves, calibration curves, decision curve analysis (DCA), and Kaplan-Meier (K-M) survival curves. ROC curves were also used to compare the nomograms with the American Joint Committee on Cancer (AJCC) staging system. Results: 7418 SGC patients were included in the study, and 307 (4.14%) of them were diagnosed with DM. This study identified that there are variables (age ≥ 80, no-parotid gland primary site, histologic type of mucoepidermoid carcinoma and squamous cell carcinoma, T stage ≥ T2, N staged ≥ N1, histologic grade ≥ III, and tumor size ≥ 41 mm) associated with the occurrence of DM in SGC patients. Therefore, we constructed diagnostic and prognostic nomograms after incorporating these variables. ROC curves illustrated the better predictive efficacy of 2 nomograms over the AJCC staging system. DCA curves, calibration curves, and K-M survival curves showed that 2 nomograms can accurately predict the occurrence and prognosis of DM among SGC patients in training and validation sets. Conclusion: It was shown that the nomograms were highly discriminative in predicting the diagnosis and prognosis of SGC patients with DM, and could identify high-risk patients, thereby providing SGC patients with individualized treatment plans.
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Affiliation(s)
- Jiayu Shi
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Yunjian Fan
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jiazhen Long
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Shuqi Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Zhen Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Jin Tang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Wenyue Chen
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
| | - Shuguang Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong Province, China
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Song Y, He Y, Li H, Zhao L, Liu Y, Liu S. Intraparotid node metastasis affects the long-term survival of patients with resectable recurrent parotid gland carcinoma. Eur Arch Otorhinolaryngol 2023; 280:5547-5555. [PMID: 37493846 DOI: 10.1007/s00405-023-08142-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/17/2023] [Indexed: 07/27/2023]
Abstract
PURPOSE The recurrence rate of parotid gland cancer is high, but research on the prognosis of recurrent parotid gland cancer (RPC) is relatively limited. We aim to determine the potential prognosis factors of RPC. STUDY DESIGN Retrospective cohort analysis. SETTING Tertiary cancer center. METHODS We conducted a retrospective review from 2012 to 2021 on RPC patients treated at the China National Cancer Center (CNCC). To analyze the impact of various variables on overall survival (OS) after recurrence, a univariate and multivariate Cox proportional hazard model was employed. RESULTS A total of 50/218 (23.0%) patients diagnosed with RPC and underwent surgery. The 5-year OS of all RPC patients in this cohort was 61.9%. 5 of 50 patients (10%) exhibited intraparotid node (IPN) metastasis. By univariate and multivariate analyses, we found that IPN metastasis was one of the prognostic factors of OS (p = 0.039) in RPC patients. The presence of IPN metastasis was also related to poor survival in individuals with negative cervical lymph nodes (CN0) (p = 0.011). In terms of the influence of surgical margins on prognosis, our findings revealed that RPC patients with negative margins exhibited a higher survival result than those with positive margins (p = 0.002). CONCLUSION According to this study, IPN metastasis indicate a high incidence of mortality in recurrent parotid cancer patients. Particularly, in CN0 patients, the presence of IPN metastasis was associated with poor survival in CN0 patients.
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Affiliation(s)
- Yixuan Song
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Yuqin He
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Han Li
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Li Zhao
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Yang Liu
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Shaoyan Liu
- Department of Head and Neck Surgical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China.
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Li Y, Hu C. Epidemiological and clinical characteristics of synchronous lung metastasis in major salivary gland mucoepidermoid carcinoma. Eur Arch Otorhinolaryngol 2023:10.1007/s00405-023-07963-5. [PMID: 37100896 DOI: 10.1007/s00405-023-07963-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/03/2023] [Indexed: 04/28/2023]
Abstract
OBJECTIVES To analyze the risk factors for synchronous lung metastases (LM) in patients with major salivary gland mucoepidermoid carcinoma (MaSG-MEC). METHODS MaSG-MEC patients were extracted from the Surveillance, Epidemiology and End Results (SEER) database between 2010 and 2014. Descriptive statistics were used to examine the baseline characteristics of the patients. We examined the association between risk factors and synchronous LM using Chi-squared tests. The primary study outcomes were overall survival (OS) and cancer-specific survival (CSS). Kaplan-Meier survival curves were compared using the log-rank test. Hazard analysis was conducted using the Cox proportional hazards model. RESULTS A total of 701 patients were analyzed, which including 8 patients (1.1%) with synchronous LM, and 693 patients without synchronous LM (98.9%). Lower T or N classification, and highly differentiated disease were associated with a significantly lower risk of LM and multivariate logistic regression analysis showed that lower T classification were associated with a significantly lower risk of LM (P < 0.05, respectively). Elderly Caucasian male patients with poorly differentiated disease, multiple sites of metastases and no surgical therapy to primary tumor were more likely to reduce life expectancy. CONCLUSION By analyzing data from a large cohort, lower T or N classification and highly differentiated disease were associated with a significantly lower risk of LM. Elderly Caucasian male patients with poorly differentiated disease, multiple sites of metastases and no surgical therapy to primary tumor were more likely to reduce life expectancy. More accurate assessments of LM will be imperative for early diagnosis and treatment in patients who harbored with higher T or N classification and poorly differentiated disease.
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Affiliation(s)
- Yujiao Li
- Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai, 201321, China
- Shanghai Key Laboratory of Radiation Oncology (20dz2261000), Shanghai, 201321, China
- Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai, 201321, China
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China
- Department of Oncology, Shanghai Medical College, Shanghai, China
| | - Chaosu Hu
- Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai, 201321, China.
- Shanghai Key Laboratory of Radiation Oncology (20dz2261000), Shanghai, 201321, China.
- Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Shanghai, 201321, China.
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, 270 Dong An Road, Shanghai, 200032, China.
- Department of Oncology, Shanghai Medical College, Shanghai, China.
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Hacioglu MB, Erdogan B, Bardakcı M, Algın E, Gulbagcı B, Hacibekiroglu I, Hamdard J, Olmez OF, Akkus H, Oksuzoglu B, Goksu SS, Dae SA, Sumbul AT, Ugraklı M, Karaagac M, Sahin E, Cabuk D, Ozer O, Yavuzsen T, Arıkan R, Köstek O, Atcı MM, Sakin A, Deligonul A, Bayır D, Dincer M, Unsal O, Yazıcı O, Zeynelgil E, Gulmez A, Harputluoglu H, Erol C, Sendur MAN, Aytekin A, Akagunduz B, Oner I, Er O, Oztosun B, Gumus M, Biricik FS, Aykan MB, Karadurmus N, Degerli E, Demirci NS, Turkmen E, Şakalar T, Secmeler S, Tanrıverdi O, Alkan A, Kemal Y, Cil I, Unal C, Iriagaç Y, Alan O, Balli S, Urun Y, Ozcan E, Turhal NS, Cicin I. Major and minor salivary gland cancers: A multicenter retrospective study. Head Neck 2023. [PMID: 37084179 DOI: 10.1002/hed.27376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/15/2023] [Accepted: 04/10/2023] [Indexed: 04/22/2023] Open
Abstract
BACKGROUND Most of the studies on salivary gland cancers are limited for various reasons such as being single-center, small number of patients, including only major or minor SGCs, or only including epidemiological data. METHODS A total of 37 medical oncology clinics from different regions of Turkey participated in this retrospective-multicenter study. The analyzed data included clinical and demographical features, primary treatment, metastasis localizations, and treatments and includes certain pathologic features. RESULTS The study included data from a total of 443 SGCs. 56.7% was in major salivary glands and 43.3% was in minor salivary glands. Distant metastasis in the major SGCs was statistically significantly more common than in the minor SGCs, locoregional recurrence was statistically significantly more common in the minor SGCs than in the major SGCs (p = 0.003). CONCLUSIONS Epidemiological information, metastasis and recurrence patterns, treatment modalities, and survival analysis of the patients over 20 years of follow-up are presented.
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Affiliation(s)
| | - Bulent Erdogan
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Murat Bardakcı
- Department of Medical Oncology, Ankara City Hospital, Ankara, Turkey
| | - Efnan Algın
- Department of Medical Oncology, Ankara City Hospital, Ankara, Turkey
| | - Burcu Gulbagcı
- Department of Medical Oncology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Ilhan Hacibekiroglu
- Department of Medical Oncology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Jamshid Hamdard
- Department of Medical Oncology, Faculty of Medicine, Medipol University, İstanbul, Turkey
| | - Omer Fatih Olmez
- Department of Medical Oncology, Faculty of Medicine, Medipol University, İstanbul, Turkey
| | - Hadi Akkus
- Department of Medical Oncology, Dr. Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Ankara, Turkey
| | - Berna Oksuzoglu
- Department of Medical Oncology, Dr. Abdurrahman Yurtaslan Ankara Oncology Education and Research Hospital, Ankara, Turkey
| | - Sema Sezgin Goksu
- Department of Medical Oncology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Shute Ailia Dae
- Department of Medical Oncology, Faculty of Adana Medicine, Baskent University, Adana, Turkey
| | - Ahmet Taner Sumbul
- Department of Medical Oncology, Faculty of Adana Medicine, Baskent University, Adana, Turkey
| | - Muzaffer Ugraklı
- Department of Medical Oncology, Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Mustafa Karaagac
- Department of Medical Oncology, Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Elif Sahin
- Department of Medical Oncology, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Devrim Cabuk
- Department of Medical Oncology, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Ozden Ozer
- Department of Medical Oncology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Tugba Yavuzsen
- Department of Medical Oncology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Rukiye Arıkan
- Department of Medical Oncology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Osman Köstek
- Department of Medical Oncology, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Muhammed Mustafa Atcı
- Department of Medical Oncology, Prof. Dr. Cemil Tascıoglu City Hospital, Istanbul, Turkey
| | - Abdullah Sakin
- Department of Medical Oncology, Prof. Dr. Cemil Tascıoglu City Hospital, Istanbul, Turkey
| | - Adem Deligonul
- Department of Medical Oncology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Duygu Bayır
- Department of Medical Oncology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Murat Dincer
- Department of Medical Oncology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Oktay Unsal
- Department of Medical Oncology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ozan Yazıcı
- Department of Medical Oncology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Esra Zeynelgil
- Department of Medical Oncology, Diskapi Yıldırım Beyazıt Education and Research Hospital, Ankara, Turkey
| | - Ahmet Gulmez
- Department of Medical Oncology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Hakan Harputluoglu
- Department of Medical Oncology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Cihan Erol
- Department of Medical Oncology, Faculty of Medicine, Ankara Yıldırım Beyazit University, Ankara, Turkey
| | - Mehmet Ali Nahit Sendur
- Department of Medical Oncology, Faculty of Medicine, Ankara Yıldırım Beyazit University, Ankara, Turkey
| | - Aydin Aytekin
- Department of Medical Oncology, Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - Baran Akagunduz
- Department of Medical Oncology, Mengucek Gazi Education and Research Hospital, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Irem Oner
- Department of Medical Oncology, Konya City Hospital, Konya, Turkey
| | - Ozlem Er
- Department of Medical Oncology, Maslak Hospital, Acıbadem MAA University, Istanbul, Turkey
| | - Bugra Oztosun
- Department of Medical Oncology, Goztepe Education and Research Hospital, Medeniyet University, Istanbul, Turkey
| | - Mahmut Gumus
- Department of Medical Oncology, Goztepe Education and Research Hospital, Medeniyet University, Istanbul, Turkey
| | | | - Musa Baris Aykan
- Department of Medical Oncology, Ankara Gulhane Education and Research Hospital, Ankara, Turkey
| | - Nuri Karadurmus
- Department of Medical Oncology, Ankara Gulhane Education and Research Hospital, Ankara, Turkey
| | - Ezgi Degerli
- Department of Medical Oncology, Faculty of Medicine, Cerrahpasa University, Istanbul, Turkey
| | - Nebi Serkan Demirci
- Department of Medical Oncology, Faculty of Medicine, Cerrahpasa University, Istanbul, Turkey
| | - Esma Turkmen
- Department of Medical Oncology, Derince Education and Research Hospital, Kocaeli, Turkey
| | - Teoman Şakalar
- Department of Medical Oncology, Kahramanmaras Necip Fazıl City Hospital, Kahramanmaras, Turkey
| | - Saban Secmeler
- Department of Medical Oncology, Sanlıurfa Mehmet Akif İnan Education and Research Hospital, Şanlıurfa, Turkey
| | - Ozgur Tanrıverdi
- Department of Medical Oncology, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla, Turkey
| | - Ali Alkan
- Department of Medical Oncology, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla, Turkey
| | - Yasemin Kemal
- Department of Medical Oncology, Faculty of Medicine, Altınbas University, Samsun, Turkey
| | - Ibrahim Cil
- Department of Medical Oncology, Istanbul Umraniye Education and Research Hospital, Istanbul, Turkey
| | - Caglar Unal
- Department of Medical Oncology, Gayrettepe Florence Nightingale Hospital, Istanbul Bilim University, Istanbul, Turkey
| | - Yakup Iriagaç
- Department of Medical Oncology, Faculty of Medicine, Tekirdag Namık Kemal University, Tekirdag, Turkey
| | - Ozkan Alan
- Department of Medical Oncology, Tekirdag City Hospital, Tekirdag, Turkey
| | - Sevinc Balli
- Department of Medical Oncology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Yuksel Urun
- Department of Medical Oncology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Erkan Ozcan
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | | | - Irfan Cicin
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
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