A Case of Angiosarcoma of the Breast

A case of angiosarcoma of the breast in a 52-year-old woman is reported. It was difficult to make a diagnosis preoperatively and intraoperative frozen section diagnosis resulted in a suspecion of sarcoma of the breast. In spite of no distant metastasis preoperatively, the patient died of multiple lung metastasis 2.5 monthes after the operation. This fact may indicate the potent malignancy of this disease. The only way to make the patient survive is to diagnose and treat the tumor while it remains in small size. For this, we should entertain the importance of biopsy, while we are capable of making the most use of every adjuvant diagnostic procedure. Especially for younger women, biopsy of the breast tumor should not be hesitated when the tumor can not be interpreted as benign definitely.