Fetal Bladder obstruction

I'm 20 weeks pregnant and had my first ultrasound yesterday. The doctor called me yesterday afternoon and said the baby's bladder was obstructed and pressing on the lungs. I have to go meet with a specialist today to find out the severity of this. Anyone dealt with this before? I'm heartbroken. I've been reading that in 9-12 percent of cases it's because of a chromosome abnormality and life isn't viable in severe cases.