Incompetent perforating veins of the leg.
D007866:Leg / Q000098:blood supply*; D007871:Leg Ulcer / Q000503:physiopathology; D012501:Saphenous Vein / Q000601:surgery; D013848:Thigh / Q000098:blood supply*; D014648:Varicose Veins / Q000503:physiopathology* / Q000601:surgery; D014680:Veins / Q000503:physiopathology*