The purpose of this study was to investigate the role of lymphatic vessel endothelial hyaluronan receptor and podoplanin, which are specific to the lymphatic system, and prospero-homeobox protein-1, angiopoietin-2, vascular endothelial growth factor-D, and vascular endothelial growth factor receptor-3, which are expressed by both lymphatic endothelium and neurons in MS pathogenesis. The gene discussed is VEGFD; the disease is myeloid sarcoma.