title: Idiopathic dilatations of the urinary tract.
mesh_terms: D000818:Animals; D001706:Biopsy; D002675:Child, Preschool; D004106:Dilatation; D004285:Dogs; D006801:Humans; D007223:Infant; D009132:Muscles / Q000166:cytology; D014513:Ureter / Q000002:abnormalities* / Q000166:cytology; D014517:Ureteral Obstruction / Q000209:etiology; D014525:Urethral Stricture / Q000209:etiology; D014718:Vesico-Ureteral Reflux / Q000209:etiology