Roughly 70% of all patients with breast cancer can be treated. by breast-pr
eserving procedures under optimal circumstances. Risk factors for the devel
opment of local recurrences are age, angioinvasion, poor differentiation of
the tumor, negative steroid hormone receptors, extensive intraductal compo
nent and positive margins. Contraindications for breast preservation are la
rge tumors without remission after preoperative chemotherapy, multicentrici
ty, extensive intraductal component, large ductal carcinoma in situ, inflam
matory breast cancer after preoperative chemotherapy, Paget disease and loc
al recurrence after breast-conserving surgery. Preoperative needle biopsy a
llows determination of nearly all of the risk factors. To further increase
the rate of breast conservation, preoperative chemotherapy should be used m
ore extensively.