Bilateral sternalis muscle at mammography

Case contributed by Dr Mark Holland


Third round breast screen

Patient Data

Age: 55
Gender: Female

Triangular opacities seen medially in both breasts represent the sternalis muscle. Only seen on the CC and Cleavage views


Normal appearance on the MLO

Case Discussion

Uncommon for bilateral sternalis muscles to be seen. 

When bilateral as in this case, they are usually asymmetrical.

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Case information

rID: 24366
Published: 10th Aug 2013
Last edited: 14th Aug 2019
System: Breast
Inclusion in quiz mode: Included

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