During the past three years I have encountered a condition arising in the course of lobar pneumonia, which at first I was unable to explain. Usually at the time of resolution, a roentgenogram of the chest would show a perfectly definite cavity which had produced no symptoms. Repeated roentgenologic examinations would reveal the fact that these cavities decreased in size, and at the end of about two weeks they would have disappeared.
REVIEW OF THE LITERATURE
I was unable to find any data in the literature which threw light on this subject until I made a search through the literature pertaining to the pathology of pneumonia. From a study of this literature it became apparent that the clinical aspect of the condition, which was subsequently called "aputrid pulmonary necrosis" by Kaufmann, had never been described. In 1907, Rosenthal2 of Berlin reviewed the literature and reported one case. He stated that