PAUL HAMOSH, M.D.; ANGELO M. T. DA SILVA, M.D.
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To the editor: In their paper "Smoking as a Cause of Erythrocytosis" (Ann Intern Med 82:512-515), Sagone and Balcerzak report on five patients of whom "three had no pulmonary disease." They base this conclusion on pulmonary function studies consisting of the measurement of vital capacity, maximum voluntary ventilation, and forced expiratory volume at one second. We wish to draw their attention to the fact that these tests are inadequate to arrive at such a conclusion. Macklem, Thurlbeck, and Fraser (1) recently described in this journal a new entity, small airways disease, in which pulmonary function tests may be normal in
HAMOSH P, DA SILVA AMT. Smoking and Disease. Ann Intern Med. ;83:572–574. doi: 10.7326/0003-4819-83-4-572_2
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Published: Ann Intern Med. 1975;83(4):572-574.
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