Incidence of second malignancies in patients with thymic carcinoma and thymic neuroendocrine tumor.

"Declarations Conflict of interestAll authors report this study was supported by grants from the National Key Research Project of China (no. 2017YFC0113502), Key Research Project of Sichuan Province (no. 2020YFS0249) and 1·3·5 project for disciplines of excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (2021HXFH056). The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results. Ethics statementThis study was approved by the Ethics Committee of West China Hospital (2021-385). Patient consent is not required because the data are sourced from the SEER database. Consent to publishNot applicable. Conflict of interest All authors report this study was supported by grants from the National Key Research Project of China (no. 2017YFC0113502), Key Research Project of Sichuan Province (no. 2020YFS0249) and 1·3·5 project for disciplines of excellence–Clinical Research Incubation Project, West China Hospital, Sichuan University (2021HXFH056). The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results."

"Funding This study was supported by grants from the National Key Research Project of China (no. 2017YFC0113502), Key Research Project of Sichuan Province (no. 2020YFS0249) and 1·3·5 project for disciplines of excellence-Clinical Research Incubation Project, West China Hospital, Sichuan University (2021HXFH056)."