Klippel–Trenaunay Syndrome: A Rare Case Presenting in a 5‑Year‑Old Girl

A 5-year-old child presented with progressive right calf swelling for 4 years and a year history of pain at the same site. There was no skin discoloration. Doppler ultrasound scan and venography of the affected leg showed soft-tissue gigantism and anomalous venous drainage of the right leg with multiple tortuous varicose veins and venous aneurysm. The deep right calf veins were anomalous but ipsilateral popliteal and femoral veins were preserved. The arterial system of the right lower limb was preserved; no arteriovenous malformation was seen, and no limb length discrepancy or evidence of bone involvement was observed. The diagnosis of Klippel–Trenaunay syndrome was made based on the above clinical and radiological features. After due consultations with the pediatrician and orthopedic surgeon, she was commenced on analgesic and application of graded compression stockings, and she’s doing well.