[Diagnosis and biopsy of nonpalpable breast lesions]

In a retrospective analysis we reviewed 117 needle-localized biopsies of nonpalpable breast lesions in 115 women from the senologic outpatient clinic at the Women's Hospital of the University of Berne. In a logistic regression analysis, the age of the patient, the presence of grouped and irregular microcalcifications as well as the presence of a stellate lesion in mammography correlated closely with the diagnosis of breast cancer. The prevalence of malignant lesions, which was equal to the rate of preoperative correctly diagnosed malignancy in this group, was 22.2%.