[Thoracic Ewing's sarcoma].

The case history of a girl aged 16 years with Ewing's sarcoma of a rib is presented. The symptomatology was typical and consisted mostly of moderate and intermittent pain in the thorax. The time elapsing between the first symptoms and the diagnosis was about 18 months and the consequent therapeutic delay was obvious. The importance of early diagnosis in cases of this type is emphasized.