[Ultrasound mammography]

The development of high resolution technology ultrasound allows not only a simple differentiation between cystic and solid lesions. Palpable tumors and subclinical lesions can be detected and characterized with a high degree of accuracy. The specific sonographic appearances of the most common entities are described. The diagnostic criteria for the differentiation have been developed over many years. There is no single parameter which allows the differentiation of all lesions, and a number of criteria must be considered.