Received: 3 November 2019
Accepted: 26 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: This study was conducted after approval from the Institutional Review Board of the Office of Responsible Research Practices at the Ohio State University. The consent was not required from each patient because this was a retrospective study and documentation of adipose and osseous metaplasia was performed as part of the routine evaluation of RCC nephrectomy cases.
: Not applicable.
: It is declared that all authors have no conflict of interest.