[The natural history of breast cancer. The impact of prevention and therapy].
Four periods are recognizable in breast carcinoma treatment: the first period can be called as "era of the incurable disease". It begins at the arising of the mankind and lasts up to the end of the 19th century. During this period the disease was usually diagnosed in far advanced stage and any therapeutical attempt was unable to cure a significant percentage of patients. The second period begins with Halsted and ends in the late 60's. It should be considered as the "eve of the surgical treatment of the breast cancer". In these years an increasing number of patients was diagnosed in earlier, curable stage and about half of them was definitively cured. In the early 70's several multimodality treatments of breast cancer were proposed by different Cancer Centers worldwide. Usually a local treatment (surgery+radiotherapy) was adopted combined with a systemic treatment (chemotherapy or monotherapy), commonly in N+ patients. Such approach cured a further 25% of patients that the local treatment alone could not cure. Moreover conservative surgical procedures were extensively carried up. In the last ten years the increasing amount of clinical data leads us to adopt a tailored therapeutical plan for nearly every patient. Numerous subgroups of patients with different level of risk were identified (patients with inflammatory carcinoma, young women at high risk, elderly patients etc.). The early data show that some further advantages in survival rates, in cost saving policy and in cosmetic outcome can be achieved.