[Angiosarcoma of the thoracic wall revealed by hemothorax].

Angiosarcoma is an uncommon tumor accounting for approximately 1% of all soft tissue tumors which, themselves account for 0.7% of all malignant tumors. Thoracic parietal localizations are reported exceptionally and prognosis is poor. We report the case of a 79-year-old woman who developed an angiosarcoma of the thoracic wall. The inaugural symptom was a hemothorax. Besides the localization, this case was particularly exceptional since the patient has remained asymptomatic three years after treatment by wide resection followed by radiotherapy.