Progression of childhood linear scleroderma to fatal systemic sclerosis.

An 8-year-old girl presented with linear scleroderma, no evidence of systemic disease, and a negative antinuclear antibody (ANA) test. Over the next 12 months, she functioned normally. However, over the subsequent 5 months, she developed dyspnea, progressive pulmonary hypertension, a positive ANA test, and died 17 months after presentation. At autopsy, diffuse pulmonary interstitial fibrosis, small pulmonary arterial fibroplasia, tricuspid and mitral valve subendocardial fibrosis, and distal esophageal fibrosis were seen. Contrary to suggestions in the rheumatology literature, childhood linear scleroderma, even when ANA negative at presentation, may progress to fatal systemic sclerosis.