Metastatic malignancy of the breast is relatively uncommon. Extramammary tumours metastatic to the breast represent 5.1% of all breast cancers and commonly occur in adolescents and young adults.
The propensity of tumours to metastasize to the breasts of young women has been attributed to the blood supply which increases during puberty and drops after menopause. Metastatic rhabdomyosarcoma is rare, with only 21 cases reported in the literature so far. We report 2 additional cases of embryonal rhabdomysarcoma with metastasis to the breast.
