Database	Search Terms
PubMed (U.S. National Library of Medicine)	Renal cell carcinoma [MeSH] OR renal mass [All Fields] OR renal lesion [All Fields] AND (MRI [MeSH terms] OR DWI [All Fields] OR apparent diffusion coefficient [All Fields] OR signal intensity [All Fields] OR signal loss) AND (differentiation OR differentiate OR classification OR characterization OR characteristics)
Embase (Elsevier)	[MRI OR exp nuclear MRI] AND [papillary OR exp papillary carcinoma] AND [renal cell carcinoma OR renal mass OR renal tumor OR kidney tumor OR exp kidney carcinoma] AND [differentiation OR exp differentiation OR characterization OR exp tissue characterization] AND [histology OR exp histology OR pathology OR exp histopathology OR histologic OR diagnosis]
Cochrane Library (John Wiley & Sons)	[renal cell carcinoma] AND [papillary]

Note—MeSH = medical subject heading, exp = explode.