Spontaneous hemothorax caused by a chest wall chondrosarcoma

A 48-year-old man who presented with chest pain was found to have a spontaneous hemothorax caused by a large grade II chondrosarcoma. This was diagnosed on the basis of the findings from thoracotomy. After chest tube drainage of the hemothorax, the tissue obtained by two computed tomography—guided biopsies of a residual mass did not yield findings that allowed diagnosis of the tumor. This unusual case illustrates the importance of a systematic workup whenever a spontaneous hemothorax is encountered.