The impact of squamous cell transformation on the prognosis of patients treated with radical nephroureterectomy.

"Declarations Ethics approval and consent to participateThis study was approved by the institutional review board (reference number: CE21454B) of the Taichung Veterans General Hospital database, Taiwan. All procedures carried out in this study using human data were in accordance with the Declaration of Helsinki. The need for informed consent was waived by Institutional Review Board I and II of Taichung Veterans General Hospital owing to the retrospective nature of this study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was financially supported in part by the Advanced Plant and Food Crop Biotechnology Center from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan."