My dd had a SUA, which was found when we were already at the specialist for another possible problem. In her case, we were told that they wanted to do more detailed scans ad an echocardiogram on her. They also said that it was linked to Down syndrome (which I've never seen or read anywhere else, but I did still panic). In the end, all of the fetal testing was fine but they wanted to do another ultrasound on her kidneys once she was born. In that one, we found out that she has a second "tube" going from her kidneys, which she has reflux through. Basically, she takes a mild daily antibiotic to prevent uti's until she outgrows it. We did a whole lot of panicking for a whole lot of nothing, thank goodness!