title: Hydrocalycosis: report of three cases in children.
mesh_terms: D002648:Child; D004926:Escherichia coli / Q000302:isolation & purification; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D052177:Kidney Diseases, Cystic / Q000175:diagnosis* / Q000382:microbiology / Q000503:physiopathology; D007682:Kidney Pelvis; D008297:Male; D009392:Nephrectomy; D011507:Proteinuria; D014508:Urea / Q000097:blood; D014525:Urethral Stricture / Q000150:complications; D014567:Urography
chemical_list: D014508:Urea