I Had A Ureter Injury In 2011 During Surgery. Every

I had a ureter injury in 2011 during surgery. Every year I have to have a renal ultrasound, each year everything has been fine, a few days ago the ultrasound showed fullness in the renal pelvis. Is there a need for concern, could my ureter be closing up? The injury was eagerness an inch and a half of my ureter had been missing when I had my uretal repair.