乳癌是台灣婦女死亡率第四位 之癌症，且較易擴散至骨骼、肝臟、肺臟以及腦部。然而， 皮膚之轉移卻代表著較不良的預後。本文將報告一42 歲女性乳癌病患於結束輔助性放射治療後 17 個月隨即反覆發生皮膚轉移的案例。此案例在化學治療控制失敗後接受了螺旋刀作為姑息性 放射治療，但治療成果只獲得了部分的反應且有相當的副作用。姑息性放射治療也許可以作為 乳癌病患病皮膚轉移的治療選擇之一，但對於患者實質助益與傷害間仍應仔細權衡。本文針對 案例的治療過程加以詳述，並且回顧相關文獻。

We report a 42-year-old Taiwanese woman with recurrent skin metastasis who presented with extensive forebreast, and abdominal skin metastasis approximately 17 months after initial adjuvant radiotherapy. The patient was treated with Helical Tomo- Therapy at a total dose of 50 Gy given in 2 Gy per fraction per day. Skin metastases in this case showed only partial response to radiotherapy, and new metastatic lesions developed during the treatment. Radiotherapy might be considered as a palliative treatment option for the skin metastasis of breast cancer. The treatment course of this case is described and previous reports are reviewed in this article.