urinary bladder neoplasm bladder flat intraepithelial lesion https://www.malacards.org/card/bladder_flat_intraepithelial_lesion bladder flat intraepithelial lesion flat intraepithelial lesion of the bladder urinary bladder flat intraepithelial lesion MEDGEN:231947 DOID:5429 NCIT:C37266 MONDO:0006111 flat intraepithelial lesion of the urinary bladder EFO:1000126 UMLS:C1332559 A non-papillary neoplasm of the urinary bladder, whose classification categories include low-grade intraurothelial neoplasia and urothelial carcinoma in situ.