AUTHOR= Frontiers Editorial Office TITLE=Retraction: Magnetic resonance imaging and 18F-fludeoxyglucose positron emission tomography/computed tomography findings of retroperitoneal clear cell carcinoma with an unknown primary site: a case report JOURNAL=Frontiers in Medicine VOLUME=10 YEAR=2023 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2023.1292298 DOI=10.3389/fmed.2023.1292298 ISSN=2296-858X