Progressive Systemic Sclerosis Occurring in Patients Exposed to Chemicals

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Abstract
Eight patients with systemic sclerosis previously exposed to organic chemical agents were investigated. Laboratory and clinical data of these patients were evaluated. The interval between the beginning of exposition and symptoms was 6.1 +/- 4.9 years. Considering the laboratory findings, a slight decrease in OKT4 positive T cell number was found. The antinucleolar and fine speckled antinuclear antibody pattern was found simultaneously in five cases. The possible role of chemical agents in the development of sclerodermic changes is discussed.