[Stewart-Treves syndrome (author's transl)].

Thirteen years after a right mastectomy with axillary node dissection completed by radiotherapy, a 78-year-old woman still had lymphoedema of the homolateral upper limb. The development of an angiosarcomatous tumour on the medial surface of the right arm led to a diagnosis of Stewart-Treves syndrome, this lesion considered by some to be metastasis of carcinoma of the breast and by others as a separate clinicopathological entity close to primary cutaneous angiosarcomas.