Abstract
A 69-year-old woman driver wearing a three-point seat belt was involved in a motor vehicle accident, and was transferred to our hospital. She had been prescribed an antiplatelet drug for hypertension and angina. On arrival, she was alert and hemorrhage into the left breast was found. Soon thereafter, her blood pressure was 50-60 mmHg and she became drowsy, but consciousness improved with rapid infusion. US and CT revealed massive hemorrhage into the left breast, but no other injuries were depicted. Immediately after admission, blood pressure was 70-80mmHg and Hb was 7.9g/dl. Two units of red cell concentrate were transfused, and her vital signs stabilized. She recovered without intervention or surgery, and was discharged on the 5th day. With usage of a 3-point seat belt, hemorrhage into the breast should be more readily recongnized as one of the injuries caused by motor vehicle accidents. Subsequent attention to possible late complications including breast cancer is also necessary.
