The case of spontaneous pneumothorax reported here is presented not only because of the rarity of the condition but because it is the only instance that I have been able to find in which roentgen evidence of the mechanism has been available.
When one reviews the literature it soon becomes evident that there is a tremendous amount of confusion as to the limitations that should be applied to the descriptive term spontaneous pneumothorax in the newborn. It would seem that the term could be better applied if it were not extended so as to include the entire neonatal period, ordinarily reckoned at about one month, but were limited to the period between birth and the establishment of the normal vital processes. This period then would be limited to the first four or five days of life, and lesions that made their first appearance after this time might better be considered
SILVER HB. SPONTANEOUS PNEUMOTHORAX IN THE NEWBORNREPORT OF A CASE IN WHICH THE MECHANISM WAS DEMONSTRATED. Am J Dis Child. 1939;57(4):907-915. doi:10.1001/archpedi.1939.01990040171013