No, cleft palette’s don’t show up in scans.
This story hits particularly close to home because my 1yo surprised us by being born with a cleft palette last year.
It means they can’t get any suction - so can’t breastfeed and need special bottles to be bottle fed. The poor little thing must have been starving without specialist help, it’s really upsetting.
Most clefts happen because “it’s just one of those things” - we don’t really know why. However, they can also be caused by drug and alcohol abuse in pregnancy, and I wonder if that was the case here.