is breast cancer always primary
Breast cancer is one of the most frequently occurring neoplasms in women. Primary tumours in the breast from other origins and metastatic lesions to the breast from extramammary tumours are rare.Most of these cases concern haematological malignancies and metastases from melanoma and lung cancer.A malignant tumour in the breast is not always primary breast cancer]. [Article in Dutch]. Sauer CJ(1), Klaase JM, Gerritsen JJ, Mastboom WJ. Author information: (1)Medisch Spectrum Twente, afd.