"Ultrasound may show a cluster of small (2-5 mm) anechoic foci with intervening septae 3."
Expected headings
"Association"
"Breast ultrasound"
"There are no distinguishing mammographic features, although a new or enlarging lobular, microlobulated mass or heterogeneous calcification cluster may sometimes represent apocrine metaplasia. When this is seen, a needle biopsy is required for definitive diagnosis 1."