1 Conclusions: Hyperplasia of verumontanum is a congenital disease.

2 Urodynamic studies in 21 cases of verumontanum hyperplasia were presented.

3 Based on the normal tissue morphology of verumontanum, the diagnosis and treatment of verumontanum diseases were discussed.

4 This paper reports 3 cases of congenital hyperplasia of the verumontanum.

5 Objective: To study the etiology, diagnosis and treatment of congenital hyperplasia of verumontanum(CHV) in children.