The pulmonary tissues of a patient, born with HLHS, aortic arch hypoplasia, and valvular anomalies and developed postoperative chylothorax after aortic arch, and supravalvar aortic stenosis repair was stained for PROX1, PODOPLANIN, VEGFR2, and VEGFR3. This evidence concerns the gene FLT4 and aortic stenosis.