I had my 20-week anatomy scan done today and everything was fine and measuring perfectly except at the end of my visit my doctor told the umbilical cord has a "defect" called sua. He and the photographer didn't seem concerned but of course, I have it in the back of my mind now and it's making me anxious. Anybody else have this happen? What was the outcome? Difficulties? Just asking to hopefully put my mind a little more at ease.