Core-needle biopsy is highly accurate when successful ... With a well-circumscribed lesion that pathologic evaluation shows to be a fibroadenoma or with calcifications that pathologic evaluation ...

The patient preferred biopsy to surveillance, with US-guided core biopsy showing fibroadenoma.

If a cyst is symptomatic or causing discomfort, it may be drained through fine needle aspiration ... removal (excisional biopsy) may be recommended if the fibroadenoma causes significant ...