The provisional diagnosis was Klippel-Trenaunay syndrome but these findings favor Parkes Weber syndrome over Klippel-Trenaunay syndrome. There was no high output cardiac failure in this case.

Vascular malformations can be divided into high flow (predominantly AV malformations) and low flow (capillary, venous, lymphatic and mixed). Klippel-Trenaunay syndrome usually involves an entire limb and is of the mixed, slow-flow type. Parkes Weber syndrome also typically involves an entire limb, but the malformation contains high-flow components.

Note that Parkes Weber is one man, of Sturge-Weber, Klippel-Trenaunay-Weber, Osler-Weber-Rendu, Pfeifer-Weber-Christian, and Weber-Cockayne fame.