[Clinical Assessment of Spontaneous Hemopneumothorax].

We experienced 25 cases of spontaneous hemopneumothorax, in which 9 were defined as occult cases on chest X-ray at the time of visit. All 9 cases visited our hospital within 12 hours after the onset. Of these, 5 were done chest computed tomography (CT) and 3 could be diagnosed as hemopneumothorax. Emergency surgery were necessary in 4 of 9. Chest CT and careful observation is thought to be essential in case of suspiciously combined hemothorax in pneumothorax cases.