Ultrasound of the breast in the symptomatic and X-ray dense breast.

Our preliminary experience of direct-contact B-scan sonomammography in 500 patients is recorded and is compared with X-ray mammography. The technique has been of considerable value in the radiologically dense breast and, since standard equipment can be used, the practice should become more widespread, in the anticipation that identification and exclusion of malignancy can be increased above that achievable by X-ray mammography alone.