Based on our 14-year experience with breast-preserving treatment of breast cancer, we recommend limited surgical intervention for the removal of a small mammary carcinoma under the proviso that adequate radiotherapy is available and that the patient can be thoroughly followed up. We are convinced that the good cosmetic result and especially the excellent psychological reaction are particularly important in order that women lose their fear of an ablative operation. Only then, by performing an operation which is not excessive at the earliest possible time can the prognosis of this type of carcinoma, which is increasing be improved.