Ultrasound as an aid for diagnosis of congenital urethral valves.
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014463:Ultrasonography; D014521:Urethra / Q000002:abnormalities*; D001748:Urinary Bladder Neck Obstruction / Q000151:congenital / Q000175:diagnosis