Note 7 — THE PATHOLOGY OF THE RESPIRATORY TRACT IN INFLUENZA
Reading edition
Pneumothorax as a complication following influenzal pneumonia is mentioned in association with marked emphysema in the epidemic of 1889–90 by Leichtenstern (82). It has been found by X-ray examination in two cases of interstitial emphysema by Berkley and Coffen (8) and also has occurred at Camp Dix according to the report of Synnot and Clark (143).