乳腺血管肉瘤极其少见 ,据文献报道占所有乳腺肿瘤的 0 .0 3% ,临床及病理均易误诊 ,我们遇到 3例 ,并复习有关文献 ,对其进行初步探讨。1　临床资料我院自 1975年— 1999年所有乳腺肿瘤 ,共发现乳腺血管肉瘤 3例。例 1,女 ,2 6岁 ,以右乳外上象限无痛性肿块入院 ,直径约 5 cm, Angiosarcoma of the breast is extremely rare. It is reported in the literature that it accounts for 0.03% of all breast tumors. The clinical and pathological findings are misdiagnosed. We encountered 3 cases and reviewed the relevant literature for preliminary discussion. 1 Clinical data All the breast tumors in our hospital from 1975 to 1999 were found in 3 cases of angiosarcoma of the breast. Case 1, female, 26 years old, admitted to hospital with a painless mass in the right breast outer quadrant, about 5 cm in diameter,