Surgery — conservation or mastectomy
Breast-conserving surgery removes the tumour with a margin and is followed by radiotherapy. For suitable tumours it gives outcomes equivalent to mastectomy while keeping the breast. Mastectomy removes the whole breast and may avoid radiotherapy in some cases, and reconstruction can often be performed at the same operation. The armpit is assessed with a sentinel node biopsy rather than clearing all the nodes, unless disease is already known to be there.
