. The American journal of roentgenology, radium therapy and nuclear medicine . d to a statement of certain well-established general facts. The entire subject is naturally to be re-garded as a study of pneumoconiosis, ageneral term employed in referring to theeffects induced in lung structure by theprolonged inhalation of abnormal quanti-ties of dust. In a general study of the sub-ject we have preferred to omit all referenceto such terms as anthracosis, siderosis andchalicosis for the reason that they are indic-ative of the results of inhalation of certain logic aspects of pneumoconiosis are by
. The American journal of roentgenology, radium therapy and nuclear medicine . d to a statement of certain well-established general facts. The entire subject is naturally to be re-garded as a study of pneumoconiosis, ageneral term employed in referring to theeffects induced in lung structure by theprolonged inhalation of abnormal quanti-ties of dust. In a general study of the sub-ject we have preferred to omit all referenceto such terms as anthracosis, siderosis andchalicosis for the reason that they are indic-ative of the results of inhalation of certain logic aspects of pneumoconiosis are by nomeans new, but thorough roentgenologicstudies have been very few. Perhaps themost valuable contribution is to be foimdin United States Health Bulletin No. 85,issued January, 1917, comprising a clinicaland roentgenologic study of 433 cases ofminers consumption among the zincminers in Missouri, by Dr. A. J. Lanza,Surgeon of the U. S. Public Health Serviceand Dr. Samuel B. Childs of important contribution was made Effects of Dust Inhalation upon the Lungs 131. Fig. 2. Pneumoconiosis in Metal Ball Grinder (Dry), Seventeen Years hilus shadows are greatly enlarged and linear markings are thickened,especially to the right base. There is intense mottling with small dense dis-crete spots on both sides, but more on the right.
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