The Klippel-Trenaunay syndrome is a rare mesodermal abnormality causin
g venous anomalies, cutaneous capillary naevi with bone and soft tissu
e hypertrophy of one or more limbs. In this pictorial review we illust
rate the plain film, venographic, ultrasound and magnetic resonance im
aging features of Klippel-Trenaunay syndrome affecting the lower limb.