15 year old girl with linear scleroderma of her left leg that has progressed over the past three years. Her calf lesion shows erythema, warmth, and continuing tissue loss. Ultrasound shows an increase in lesion hypodermal vascularity; there are a few small color Doppler signals in both the lesion and normal hypodermis, and one large color Doppler signal in the lesion hypodermis (hypodermal vascularity = 1). D = dermis, H = hypodermis. Arrowheads indicate boundaries of dermis, while arrows indicate boundaries of hypodermis.