kidney benign neoplasm nephrogenic adenoma https://www.malacards.org/card/nephrogenic_adenoma MEDGEN:452429 DOID:7334 So-called nephrogenic adenoma is a distinct metaplastic lesion of the urothelium characterized by aggregates of cuboidal or hobnail cells. These cells line thin papillary fronds on the surface or form tubular structures within the lamina propria. nephrogenic adenoma MONDO:0004191 UMLS:C0334039 NCIT:C7413