[The radiology of traumatic pneumatoceles. Pathogenesis and course (author's transl)].

The development and course of traumatic pneumatoceles was followed radiologically in four patients. The interval between the trauma and a recognisable cystic space varied. The patients had in common the fact that they were young, had suffered a serious road accident and developed haemoptysis. In one patient a lobe had to be resected, in the other spontaneous regression occurred within four weeks.