[Four cases of spontaneous hemopneumothorax]

We reported four cases of spontaneous hemopneumothorax. Of these, one (a 25-year-old man) had right hemopneumothorax and three (a 28-year-old man, a 21-year-old woman and a 24-year-old man) had left hemopneumothorax. In one case, because massive intrapleural bleeding had continued, an emergency operation was performed. In two cases, thoracotomy was performed because of recurrent pneumothorax. In the other case, about one week after hemopneumothorax had been controlled by pleural drainage, pneumothorax recurred and thoracotomy was performed. In conclusion, early thoracotomy is the best treatment for spontaneous hemopneumothorax.