title: Proliferative tumors of the ureter and renal pelvis, with further observations on the significance of epithelial cell nests; six case reports.
mesh_terms: D004847:Epithelial Cells; D006801:Humans; D007668:Kidney; D007680:Kidney Neoplasms; D007682:Kidney Pelvis; D009369:Neoplasms; D014513:Ureter; D014516:Ureteral Neoplasms
keywords: KIDNEYS/tumors; URETERS/tumors