It terminates at the verumontanum. Even a small lesion in that region can cause an obstruction, often bilateral. Perineal pain and hematospermia may be associated. The rest of the vas deferens is usually normal. Ejaculatory duct obstruction is best diagnosed with vasography.
Treatment is performed endoscopically with a resectoscope incision along the verumontanum.
In Vitro Fert.