A 17-year-old primigravida complained of decreased fetal movements. She delivered a baby weighing 2000gms at 30 weeks of gestation. The Apgar scores of the baby were 4 and 5 at 1 and 5 minutes respectively. The baby died in an hour. Post- mortem examination revealed multiple, peripheral, radially arranged cysts in the kidney. Most common associated finding with this condition is?