TALC PNEUMOCONIOSIS

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Abstract
There is increasing evidence that occupational inhalation of pulmonary irritants is one of the major causes of pulmonary fibrosis. Free silica is a common etiologic agent. Talc, a hydrous magnesium silicate, is an unusual cause for such pneumoconiosis. The following case demonstrates the roentgen and clinical characteristics of talc pneumoconiosis. REPORT OF A CASE The patient, a 65-year-old white man, was referred for roentgen study of the chest on June 19, 1950, because of a chronic cough which was intensified during the preceding week. He had a cough of many years' duration accompanied by production of frothy sputum. On June 9, 1950, sneezing, coryza, intensified cough, and purulent postnasal discharge and expectoration developed. There was accompanying onset of exertional dyspnea. Walking three blocks caused dyspnea. For a period of 24 years since 1926, he had been employed in the handling and packaging of elastic cord (rubber thread) coated with talc

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