[Ultrasound detection of breast cancer with normal mammogram].

In eleven patients with breast cancer the diagnosis was made by using ultrasound as the only method. In none of the patients could mammography show the malignoma. Although six of the patients underwent additional tube X-ray investigation, no radiological criteria of malignancy were found on the mammograms. In ten patients a lump of the breast was palpable and/or retraction of the skin was visible. In one woman, neither the clinical investigation nor the mammography could reveal the tumor. The ultrasound of the breast is a indispensable and useful method for diagnosing breast cancer.