Asbestosis has, of comparatively recent time, assumed a position of prominent and perhaps peculiar interest in the field of pneumonoconiosis and occupational disease. While the asbestos industry is more than two thousand years old, it is only within the past few years that it has assumed the prominent place which it now occupies in the industrial arts. Until recently asbestosis has been assumed to be essentially silicosis, and the free silica has been thought to constitute the dangerous factor in pneumonoconiosis as contrasted with the relative harmlessness of other dusts.
It has come to attention within the last three or four years that there is a peculiar characteristic in the state of asbestosis, not found in silicosis, and it is our purpose in this report to record some data that have come to hand, since American medicine thus far has no report on this peculiar condition and to the end
LYNCH KM, SMITH WA. ASBESTOSIS BODIES IN SPUTUM AND LUNG. JAMA. 1930;95(9):659–661. doi:10.1001/jama.1930.02720090021007