Clinical features
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• Also called progressive systemic sclerosis
• Initially presents with nonspecific joint pains, which can lead to arthritis
• Joint mobility may be restricted by calcinosis or skin thickening
• May be accompanied or even dominated by arthritis and arthralgia
• Serum positive for rheumatoid factor and anticentromere antibodies (Br J Rheumatol 1995;34:831)

Micro description
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• Superficial fibrin deposition in synovial membrane, mild mononuclear infiltrate, mild synovial hyperplasia, proliferation of collagen fibers, focal obliteration of small vessels

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