Two cases of scleroderma and carcinoma of the lung are reported. The 16 previously reported cases in the English literature are reviewed and tabulated in an attempt to determine the pathological and clinical presentation of carcinoma of the lung superimposed on the sclerodermal lung. When patients with scleroderma develop a change in pulmonary symptoms, a superimposed cancer of the lung should be suspected. The relationship between interstitial pulmonary inflammatory disease and cancer of the lung is discussed.
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