title: Multicentric breast cancer. The incidence of new cancers in the homolateral breast after partial mastectomy.
abstract: Multicentric microfoci of cancer are often present in patients with cancer of the breast and affect the contralateral breast as well as the originally affected one. despite the high incidence of these microfoci of cancer, the appearance of new clinical cancers is rare. In a period of 610 patient-years of exposure after partial mastectomy for cancer, six new cancers appeared in the contralateral breast and four in the affected one. These findings suggest that after partial mastectomy the danger of the appearance of a new cancer in the affected breast is less than might have been anticipated.
mesh_terms: D001943:Breast Neoplasms / Q000532:radiotherapy / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008408:Mastectomy; D009364:Neoplasm Recurrence, Local; D009378:Neoplasms, Multiple Primary; D011867:Radioisotope Teletherapy