= KLIPPEL-TRÉNAUNAY-WEBER SYNDROME

[Frederick Parkes Weber (1863–1962), dermatologist, London]

= characterized by cutaneous capillary malformation and limb overgrowth in combination with high-flow malformations (small arteriovenous fistulas and shunts) and congenital varicose veins

• pseudo-Kaposi sarcoma = pseudo-capillary malformation = feeling of warmth over affected skin ← high oxygen partial pressure
• high-output cardiac failure (occasionally)
• hemihypertrophy = outgrowth of soft tissues + overgrowth of bone in affected limb
• arteriovenous fistula-like stains in periarticular region

DDx: Klippel-Trénaunay syndrome (low-flow vascular malformations)