AUTHOR=Kwon Lawrence , Griffiths Jennifer , DiFranza Lanny T. TITLE=The unexpected diagnosis of karyomegalic interstitial nephritis in a presumed case of Mesoamerican Nephropathy: a case report JOURNAL=Frontiers in Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2025.1465783 DOI=10.3389/fmed.2025.1465783 ISSN=2296-858X