Forsyth County girl diagnosed with rare heart condition at birth Mary Beth Scott undergoes treatment at Boston Children's Hospital Mary Beth Scott was born a the rare heart condition in which she has three chambers instead of four. Then in November, she was diagnosed with pulmonary vein stenosis, in which an obstruction or blockage is in the blood vessels that bring oxygen-rich blood from the lungs back to the heart. Since she was born May 12, 2015, she has undergone two open-heart surgeries.