In which patients should the diagnosis of urethral obstruction be considered? What are the findings of urethral obstruction on ultrasound? What is the imaging method of choice in urethral obstruction? What is the most common cause of urethral obstruction in boys? What treatment is appropriate for patients with urethral valves? Book traversal links for Prethral obstruction ‹ Name 10 causes of abdominal mass in older infants and children. Up In which patients should the diagnosis of urethral obstruction be considered? ›