ROBERT J. GRIFFIN, M.D.
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In our experience with the male student body at the University of Kentucky, the incidence of spontaneous (idiopathic) pneumothorax is about one case per year per 1000 male students.1 In one of the cases previously reported, a "popping" or "crunching" sound was heard over the precordium which was audible to the patient. Of four cases of spontaneous pneumothorax observed by the author since this paper was written, three presented this phenomenon. Hamman2 has observed this sign and feels that it is pathognomonic of mediastinal emphysema, a step in the occurrence of spontaneous pneumothorax. So few simple physical signs are absolutely
GRIFFIN RJ. A DIAGNOSTIC SIGN OF SPONTANEOUS INTERSTITIAL EMPHYSEMA OF THE MEDIASTINUM; CASE REPORTS1. Ann Intern Med. 1942;17:295–297. doi: 10.7326/0003-4819-17-2-295
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Published: Ann Intern Med. 1942;17(2):295-297.
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