[Breast echography].

The ultrasonography of the breast is an essential technique in the diagnosis of mammary disease as mammography and fine needle aspiration. Ultrasound is extremely reliable in differentiating cystic from solid lesions. Three signs are the most significant in the diagnosis between benign tumors and well circumscribed cancer: shape and margins of the mass, depth/width ratio, feature of the connective tissue and adjacent structures. In association with mammography, sonography is most likely significant in breast screening cancer.