Breast lesions are a common condition, diagnosed by imaging and palpation. In order to reduce the number of biopsies performed to the definitive diagnosis of a breast lesion, an imaging method with a high degree of accuracy is needed. Ultrasound imaging with microbubbles contrast media allows the diagnosis of vascularization of the lesion, according to timing. Our hypothesis is that a highly vascularized lesion that enhances in an early timing is most likely to represent a malignant lesion and thus, deserves biopsy for a definitive diagnosis. Females over 18 years age, with a focal lesion in breast will be suitable to perform this examination.

Inclusion Criteria:

• Female with a diagnosed breast focal lesion

Exclusion Criteria:

• Allergic conditions to contrast media,
• asthma,
• R-L shunt