What is the difference between a venous malformation and Klippel-Trenaunay syndrome?
A venous malformation is a slow flow vascular malformation and is one component of Klippel-Trenaunay syndrome (KTS). A venous malformation can occur on its own, independently of KTS. KTS is a complex combined slow flow vascular malformation which most commonly affects a leg. It has 3 components: a port-wine stain (a capillary malformation) in the skin, varicose veins (a type of venous malformation) and increased growth of bone or soft tissue (which for example can increase the length of an affected leg). Lymphatic malformations including abnormalities of lymphatic flow may be present in KTS.
