Spontaneous pneumothorax has been the subject of numerous reports in the literature. With relatively few exceptions,1 most reports have been concerned with small groups of cases or with isolated patients who have presented unusual features or complications. The reports of larger numbers of cases have usually been drawn from clinics or sanatoriums dealing with tuberculous patients. Reports of this type necessarily must be colored by the relation of pulmonary tuberculosis and spontaneous pneumothorax; consequently, the results are biased in one direction.
The following report is based on a study of 126 patients with 129 episodes of spontaneous pneumothorax observed among military personnel in the Army Air Forces Training Command. Since all military personnel have a roentgenogram of the chest made prior to entrance into the service and since many have roentgenograms made after entering on active duty, the results observed in this group are biased in the opposite direction,
LEACH CJE. PNEUMOTHORAX IN YOUNG ADULT MALESDESCRIPTIVE STATISTICS IN ONE HUNDRED AND TWENTY-SIX CASES. Arch Intern Med (Chic). 1945;76(5):264–268. doi:10.1001/archinte.1945.00210350010002
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