title: A problem that should have appeared earlier--but didn't.
mesh_terms: D000368:Aged; D005260:Female; D006333:Heart Failure / Q000150:complications; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology*; D007682:Kidney Pelvis / Q000002:abnormalities* / Q000601:surgery; D009392:Nephrectomy; D014517:Ureteral Obstruction / Q000150:complications / Q000151:congenital* / Q000601:surgery; D014546:Urinary Catheterization