Scleroderma can involve limited or widespread changes in the skin, with a host of associated internal organ manifestations. In cases of limited skin involvement, the acronym CREST has been widely used to denote the characteristic features of calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasias. In cases of widespread skin involvement, the term "systemic sclerosis" may be used. Additional features include fibrotic lung disease, pulmonary hypertension, and renal failure.

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