Prognostic effects of previous cancer history on patients with major salivary gland cancer
Junhong Li
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Data curation, Formal analysis, Visualization, Writing - review & editing, Writing - original draft
Search for more papers by this authorYufang Rao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorXiaoyu Wang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Visualization, Writing - review & editing, Data curation, Writing - original draft
Search for more papers by this authorLibo Yu
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Writing - original draft, Writing - review & editing, Data curation, Software, Formal analysis, Validation
Search for more papers by this authorKe Qiu
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorMinzi Mao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorYao Song
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorWendu Pang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorDanni Cheng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Writing - original draft, Visualization, Writing - review & editing, Data curation
Search for more papers by this authorYuyang Zhang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorLan Feng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorXinyi Wang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorXiuli Shao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Formal analysis, Software, Visualization
Search for more papers by this authorYaxin Luo
Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Formal analysis, Visualization, Software
Search for more papers by this authorYongbo Zheng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Funding acquisition, Validation
Search for more papers by this authorXiaohong Li
Yaan People's Hospital, Yaan, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorYanhong Xu
Yaan People's Hospital, Yaan, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorCorresponding Author
Wei Xu
Department of Biostatistics, Princess Margaret Cancer Centre and Dalla Lana School of Public Health, Toronto, Ontario, Canada
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Writing - review & editing, Project administration, Resources, Supervision, Methodology, Writing - original draft
Search for more papers by this authorCorresponding Author
Yu Zhao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Methodology, Writing - review & editing, Project administration, Supervision, Resources, Funding acquisition, Writing - original draft
Search for more papers by this authorCorresponding Author
Jianjun Ren
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
Department of Oto-Rhino-Laryngology, Langzhong People's Hospital, Langzhong, China
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Funding acquisition, Writing - review & editing, Project administration, Supervision, Resources, Methodology, Writing - original draft
Search for more papers by this authorJunhong Li
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Data curation, Formal analysis, Visualization, Writing - review & editing, Writing - original draft
Search for more papers by this authorYufang Rao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorXiaoyu Wang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Visualization, Writing - review & editing, Data curation, Writing - original draft
Search for more papers by this authorLibo Yu
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Writing - original draft, Writing - review & editing, Data curation, Software, Formal analysis, Validation
Search for more papers by this authorKe Qiu
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorMinzi Mao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorYao Song
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorWendu Pang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorDanni Cheng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Investigation, Writing - original draft, Visualization, Writing - review & editing, Data curation
Search for more papers by this authorYuyang Zhang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorLan Feng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorXinyi Wang
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorXiuli Shao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Formal analysis, Software, Visualization
Search for more papers by this authorYaxin Luo
Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Formal analysis, Visualization, Software
Search for more papers by this authorYongbo Zheng
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
Contribution: Conceptualization, Writing - review & editing, Funding acquisition, Validation
Search for more papers by this authorXiaohong Li
Yaan People's Hospital, Yaan, China
Contribution: Conceptualization, Writing - review & editing, Validation
Search for more papers by this authorYanhong Xu
Yaan People's Hospital, Yaan, China
Contribution: Conceptualization, Validation, Writing - review & editing
Search for more papers by this authorCorresponding Author
Wei Xu
Department of Biostatistics, Princess Margaret Cancer Centre and Dalla Lana School of Public Health, Toronto, Ontario, Canada
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Writing - review & editing, Project administration, Resources, Supervision, Methodology, Writing - original draft
Search for more papers by this authorCorresponding Author
Yu Zhao
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Methodology, Writing - review & editing, Project administration, Supervision, Resources, Funding acquisition, Writing - original draft
Search for more papers by this authorCorresponding Author
Jianjun Ren
Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University, Chengdu, China
West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China
Department of Oto-Rhino-Laryngology, Langzhong People's Hospital, Langzhong, China
Correspondence
Jianjun Ren and Yu Zhao, Department of Oto-Rhino-Laryngology, and West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, China.
Email: [email protected] and [email protected]
Wei Xu, Department of Biostatistics, Princess Margaret Cancer Centre, 10-511, 610 University Avenue Toronto, Toronto, Ontario, Canada.
Email: [email protected]
Contribution: Conceptualization, Funding acquisition, Writing - review & editing, Project administration, Supervision, Resources, Methodology, Writing - original draft
Search for more papers by this authorJunhong Li, Yufang Rao, Xiaoyu Wang and Libo Yu contributed equally to this work.
Abstract
Objectives
To explore the prognostic effects of previous cancer history on patients with major salivary gland cancer (SGC).
Subjects and Methods
SGC patients with (sec-SGC) and without (one-SGC) a previous cancer from the SEER database were identified. Cox proportional hazards regression (CoxPH) models were used to compare the prognosis between sec-SGC and one-SGC patients. Subgroup analyses for sec-SGC patients by gender, previous cancer types, previous cancer histology, and cancer diagnosis interval (CDI) were performed. Two CoxPH models were constructed to distinguish sec-SGC patients with different prognostic risks.
Results
9098 SGC patients were enrolled. Overall, sec-SGC patients (adjusted HR [aHR] = 1.26, p < 0.001), especially those with a CDI ≤ 5 years (aHR = 1.47, p < 0.001), had worse overall survival (OS) than one-SGC patients. In subgroup analysis, only sec-SGC patients with a previous head and neck cancer who were female (aHR = 2.38, p = 0.005), with a CDI ≤ 5 years (aHR = 1.65, p = 0.007) or with a previous squamous cell carcinoma (aHR = 6.52, p < 0.001) had worse OS. Our models successfully differentiated all sec-SGC patients into high-, intermediate- and low-risk groups with different prognosis.
Conclusions
Sec-SGC patients with different previous cancer types, gender, CDI and previous cancer histology had varied prognosis. The models we constructed could help differentiate the prognosis of sec-SGC patients with different risks.
CONFLICT OF INTEREST STATEMENT
The Author(s) declare(s) that there is no conflict of interest.
Open Research
DATA AVAILABILITY STATEMENT
This study acquired SEER data (https://seer.cancer.gov/) under accession number 18515-Nov2019. No additional data are available.
Supporting Information
Filename | Description |
---|---|
odi14530-sup-0001-Supinfo.docxWord 2007 document , 2.7 MB |
Appendix S1 |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
REFERENCES
- Al-Husseini, M. J., Saad, A. M., Mohamed, H. H., Alkhayat, M. A., Sonbol, M. B., & Abdel-Rahman, O. (2019). Impact of prior malignancies on outcome of colorectal cancer; revisiting clinical trial eligibility criteria. BMC Cancer, 19, 863.
- Ata-Ali, J., Zurriaga, O., & Alberich, C. (2016). Incidence and survival rates for malignant salivary gland tumors. Journal of Oral Science, 58, 67–73.
- Bellinger, J. D., Millegan, W., & Abdalla, A. E. (2015). “I'm not ashamed to talk on it!”: African-American Women's decisions about cervical cancer prevention and control in South Carolina. Women's Health Issues, 25, 120–127.
- Bian, X., Wang, K., Wang, Q., Yang, L., Xia, J., Wu, W., & Li, L. (2021). The impact of a prior malignancy on outcomes in gastric cancer patients. Cancer Medicine, 10, 1457–1470.
- Bian, X., Xia, J., Wang, K., Wang, Q., Yang, L., Wu, W., & Li, L. (2020). The effects of a prior malignancy on the survival of patients with ovarian cancer: A population-based study. Journal of Cancer, 11, 6178–6187.
- Bradley, P. J., & McGurk, M. (2013). Incidence of salivary gland neoplasms in a defined UK population. The British Journal of Oral & Maxillofacial Surgery, 51, 399–403.
- Camp, R. L., Dolled-Filhart, M., & Rimm, D. L. (2004). X-tile: A new bio-informatics tool for biomarker assessment and outcome-based cut-point optimization. Clinical Cancer Research, 10, 7252–7259.
- Carlson, E. R., & Schlieve, T. (2019). Salivary gland malignancies. Oral and Maxillofacial Surgery Clinics of North America, 31, 125–144.
- Carvalho, A. L., Nishimoto, I. N., Califano, J. A., & Kowalski, L. P. (2005). Trends in incidence and prognosis for head and neck cancer in the United States: A site-specific analysis of the SEER database. International Journal of Cancer, 114, 806–816.
- Chen, K., Tian, L., Li, Y., Jin, Y., Liu, H., & Wang, H. (2020). Impact of prior cancer on the prognosis of patients with laryngeal cancer: A population-based study using the surveillance, epidemiology, and end results database. Frontiers in Oncology, 10, 561330.
- Cox, D. R. (1972). Regression models and life-tables. Journal of the Royal Statistical Society: Series B, 34, 187–202.
- Curtis, R. E. (2006). New malignancies among cancer survivors: SEER cancer registries, 1973-2000. US Department of Health and Human Services, National Institutes of Health.
- Dale, S. K., Dean, T., Sharma, R., Reid, R., Saunders, S., & Safren, S. A. (2019). Microaggressions and discrimination relate to barriers to care among black women living with HIV. AIDS Patient Care and STDs, 33, 175–183.
- Derbi, H. A., Kruger, E., & Tennant, M. (2016). Incidence of oral cancer in Western Australia (1982–2009): Trends and regional variations. Asia-Pacific Journal of Clinical Oncology, 12, e305–e310.
- Falchook, A. D., Zevallos, J. P., & Chera, B. S. (2016). Increased risk of salivary gland cancer among women with a previous cancer diagnosis. Head & Neck, 38(Suppl 1), E446–E451.
- Ferlay, J., Burkhard, C., Whelan, S., & Parkin, D. (2005). Check and conversion programs for cancer registries IARC Technical Report No. 42. IARC Press.
- Geiger, J. L., Ismaila, N., Beadle, B., Caudell, J. J., Chau, N., Deschler, D., Glastonbury, C., Kaufman, M., Lamarre, E., Lau, H. Y., Licitra, L., Moore, M. G., Rodriguez, C., Roshal, A., Seethala, R., Swiecicki, P., & Ha, P. (2021). Management of Salivary Gland Malignancy: ASCO guideline. Journal of Clinical Oncology, 39, 1909–1941.
- Gillison, M. L., Broutian, T., Pickard, R. K., Tong, Z. Y., Xiao, W., Kahle, L., Graubard, B. I., & Chaturvedi, A. K. (2012). Prevalence of oral HPV infection in the United States, 2009–2010. JAMA, 307, 693–703.
- Guo, Z., Wang, Z., Liu, Y., Han, J., Liu, J., & Zhang, C. (2021). Nomograms-based prediction of overall and cancer-specific survivals for patients diagnosed with major salivary gland carcinoma. Annals of Translational Medicine, 9, 1230.
- Han, Y., Wang, J., & Xu, B. (2020). Clinicopathological characteristics and prognosis of breast cancer with special histological types: A surveillance, epidemiology, and end results database analysis. Breast, 54, 114–120.
- Hashim, D., Sartori, S., La Vecchia, C., Serraino, D., Maso, L. D., Negri, E., Smith, E., Levi, F., Boccia, S., Cadoni, G., Luu, H. N., Lee, Y. A., Hashibe, M., & Boffetta, P. (2017). Hormone factors play a favorable role in female head and neck cancer risk. Cancer Medicine, 6, 1998–2007.
- Jegadeesh, N., Liu, Y., Prabhu, R. S., Magliocca, K. R., Marcus, D. M., Higgins, K. A., Vainshtein, J. M., Trad Wadsworth, J., & Beitler, J. J. (2015). Outcomes and prognostic factors in modern era management of major Sali. Oral Oncology, 51, 770–777.
- Jiang, W. M., Wu, L. L., Wei, H. Y., Ma, Q. L., & Zhang, Q. (2021). A parsimonious prognostic model and heat map for predicting survival following adjuvant radiotherapy in parotid gland carcinoma with lymph node metastasis. Technology in Cancer Research & Treatment, 20, 179–185.
- Laccetti, A. L., Pruitt, S. L., Xuan, L., Halm, E. A., & Gerber, D. E. (2015). Effect of prior cancer on outcomes in advanced lung cancer: Implications for clinical trial eligibility and accrual. Journal of the National Cancer Institute, 107, djv002. https://doi.org/10.1093/jnci/djv002
- Lewis, A. G., Tong, T., & Maghami, E. (2016). Diagnosis and management of malignant salivary gland tumors of the parotid gland. Otolaryngologic Clinics of North America, 49, 343–380.
- Lichtenstein, B. (2003). Stigma as a barrier to treatment of sexually transmitted infection in the American deep south: Issues of race, gender and poverty. Social Science & Medicine, 57, 2435–2445.
- Luo, X., Liu, S., Chen, Y., Qiu, X., Huang, D., Zhang, D., Liang, Q., Yang, Y., & Zeng, X. (2021). Predicting cancer-specific mortality in patients with parotid gland carcinoma by competing risk nomogram. Head & Neck, 43, 3888–3898.
- Mazul, A. L., Naik, A. N., Zhan, K. Y., Stepan, K. O., Old, M. O., Kang, S. Y., Nakken, E. R., & Puram, S. V. (2021). Gender and race interact to influence survival disparities in head and neck cancer. Oral Oncology, 112, 105093.
- Mundi, N., Ghasemi, F., Zeng, P. Y. F., Prokopec, S. D., Patel, K., Kim, H. A. J., Di Gravio, E., MacNeil, D., Khan, M. I., Han, M. W., Shaikh, M., Mendez, A., Yoo, J., Fung, K., Gameiro, S. F., Palma, D. A., Mymryk, J. S., Barrett, J. W., Boutros, P. C., & Nichols, A. C. (2020). Sex disparities in head & neck cancer driver genes: An analysis of the TCGA dataset. Oral Oncology, 104, 104614.
- Murphy, C. C., Gerber, D. E., & Pruitt, S. L. (2018). Prevalence of prior cancer among persons newly diagnosed with cancer: An initial report from the surveillance, epidemiology, and end results program. JAMA Oncology, 4, 832–836.
- Pfister, D. G., Spencer, S., Adelstein, D., Adkins, D., Anzai, Y., Brizel, D. M., Bruce, J. Y., Busse, P. M., Caudell, J. J., Cmelak, A. J., Colevas, A. D., Eisele, D. W., Fenton, M., Foote, R. L., Galloway, T., Gillison, M. L., Haddad, R. I., Hicks, W. L., Hitchcock, Y. J., … Darlow, S. D. (2020). Head and neck cancers, version 2.2020, NCCN clinical practice guidelines in oncology. Journal of the National Comprehensive Cancer Network, 18, 873–898.
- Pinkston, J. A., & Cole, P. (1999). Incidence rates of salivary gland tumors: Results from a population-based study. Otolaryngology – Head and Neck Surgery, 120, 834–840.
- Qian, K., Sun, W., Guo, K., Zheng, X., Sun, T., Chen, L., Xiang, J., Li, D., Wu, Y., Ji, Q., & Wang, Z. (2019). The number and ratio of positive lymph nodes are independent prognostic factors for patients with major salivary gland cancer: Results from the surveillance, epidemiology, and end results dataset. European Journal of Surgical Oncology, 45, 1025–1032.
- Rayess, H. M., Dezube, A., Bawab, I., Raza, S. N., Yoo, G. H., Lin, H.-S., & Jacobs, J. R. (2017). Tumor differentiation as a prognostic factor for major salivary gland. Otolaryngology – Head and Neck Surgery, 157, 454–461.
- Sabatini, M. E., & Chiocca, S. (2020). Human papillomavirus as a driver of head and neck cancers. British Journal of Cancer, 122, 306–314.
- Sharma, E., Dahal, S., Sharma, P., Bhandari, A., Gupta, V., & Dahal, S. (2018). Secondary salivary gland malignancy in thyroid cancer: A United States population based study. Journal of Clinical Medical Research, 10, 601–605.
- Siegel, R. L., Miller, K. D., Fuchs, H. E., & Jemal, A. (2021). Cancer statistics, 2021. CA: A Cancer Journal for Clinicians, 71, 7–33.
- Stepanikova, I., & Oates, G. R. (2017). Perceived discrimination and privilege in health care: The role of socioeconomic status and race. American Journal of Preventive Medicine, 52, S86–S94.
- Wang, Y.-Q., Lv, J.-W., Tang, L.-L., Du, X.-J., Chen, L., Li, W.-F., Liu, X., Guo, Y., Lin, A.-H., Mao, Y.-P., Sun, Y., Chen, Y.-P., & Ma, J. (2019). Effect of prior cancer on trial eligibility and treatment outcomes in nasopharyngeal carcinoma: Implications for clinical trial accrual. Oral Oncology, 90, 23–29.
- Warren, S. (1932). Multiple primary malignant tumors. A survey of the literature and a statistical study. American Journal of Cancer, 16, 1358–1414.
- Wen, L., Yu, K., Lu, H., & Zhong, G. (2021). Impact of prior cancer history on survival of patients with gastric cancer. European Journal of Surgical Oncology, 47, 2286–2294.
- Westergaard-Nielsen, M., Godballe, C., Eriksen, J. G., Larsen, S. R., Kiss, K., Agander, T., Ulhøi, B. P., Charabi, B., Klug, T. E., Jacobsen, H., Johansen, J., Kristensen, C. A., Andersen, E., Andersen, M., Andreasen, S., & Bjørndal, K. (2021). Salivary gland carcinoma in Denmark: a national update and follow-up on incidence, histology, and outcome. European Archives of Oto-Rhino-Laryngology, 278, 1179–1188.
- Working Group Report. (2005). International rules for multiple primary cancers (ICD-0 third edition). European Journal of Cancer Prevention, 14, 307–308.
- Wu, Y., Chen, X., Qian, D., Wang, W., Zhang, Y., Hu, J., Zhu, J., Wu, Q., & Cao, T. (2021). Effect of prior cancer on survival outcomes for patients with advanced prostate cancer. BMC Urology, 21, 26.
- Zhou, H., Huang, Y., Qiu, Z., Zhao, H., Fang, W., Yang, Y., Zhao, Y., Hou, X., Ma, Y., Hong, S., Zhou, T., Zhang, Y., & Zhang, L. (2018). Impact of prior cancer history on the overall survival of patients newly diagnosed with cancer: A pan-cancer analysis of the SEER database. International Journal of Cancer, 143, 1569–1577.
- Zhu, K., Lin, R., Zhang, Z., Chen, H., & Rao, X. (2020). Impact of prior cancer history on the survival of patients with larynx cancer. BMC Cancer, 20, 1137.