If i had a baby with a life threatening illness that needed a team of pediatric surgeons on the ready at it's birth, the only way i could possible know would be to have an ultrasound.
So true. One of my friends had a baby with a huge cyst in her chest that affected the size of her babies' lungs and thus her ability to breath. Her baby was born with a resuscitation team on standby and an operating theatre ready. End result - a healthy child who otherwise may not have survived her first hours.