Breast within a breast sign
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The breast within a breast sign refers to the common mammographic appearance of breast hamartomas (fibroadenolipomas). Since these benign lesions are well-circumscribed and contain a mixture of fibrous, glandular and fatty tissue (just like normal breast), it is not surprising that they appear very much like a second breast sitting within a breast.
- 1. Paraskevopoulos JA, Hosking SW, Stephenson T. Breast within a breast: a review of breast hamartomas. Br J Clin Pract. 1990;44 (1): 30-2. - Pubmed citation