title: [Diagnostic difficulties in renal pelvis tumors].
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D009395:Nephritis, Interstitial / Q000175:diagnosis; D010212:Papilloma / Q000175:diagnosis*
vernacular_title: Trudności w rozpoznawaniu guzów miedniczki nerkowej.