Intermittent ureterovesical junction obstruction in children

While intermittent ureteropelvic junction obstruction is well recognized clinically, intermittent obstruction at the ureterovesical junction has not been previously described. We herein present a case report of intermittent ureterovesical junction obstruction, characterized by intermittent hydroureteronephrosis on ultrasonography and symptoms of flank/abdominal pain, nausea and vomiting.