CM is considered benign or probably benign in perimenopausal women.
Perform bx if...
Finding is new or enlarging in a postmenopausal woman NOT on HRT to exclude a malignancy such as...
Apocrine or papillary ductal carcinoma in situ
Mucinous carcinoma
There is a discrete solid component or suspicious calcifications
If CC has thick inspissated secretions they can be difficult to distinguish from solid masses
When mass shows circumscribed margins, homogeneous low-level echoes, posterior enhancement, and is incidentally found on sono in pt with multiple cysts -> classify it as probably benign or benign
Get aspiration and possible bx if...
Margins are not circumscribed
Mass is new, palpable, or tender