PECAM1 and Gorham-Stout disease: To determine the presence of blood and lymphatic vessel markers on the endothelial cells of the pathological proliferating vasculature in Gorham’s disease Hagendorn and coworkers [46] stained specimens for specific makers such as panendothelial marker CD 31 (platelet endothelial cell adhesion molecule), lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1), and VEGF receptor (VEGFR)-3.