title: Early ultrasound diagnosis of fetal bladder neck obstruction.
mesh_terms: D000328:Adult; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D014463:Ultrasonography; D001748:Urinary Bladder Neck Obstruction / Q000175:diagnosis*