Giant fibroadenoma

Case contributed by Henry Knipe


Left breast painless lump increasing in size over 9 months.

Patient Data

Age: 30 years
Gender: Female

Very large dense mass with well-defined margins, posterior and slightly superior to the nipple. 


4.5 x 2 .6 cm well circumscribed well defined ovoid mass at the 12 o'clock position 2 cm from the nipple. The mass is predominantly solid, contains multiple small cystic spaces and large areas of echogenic material which appeared to stream (consistent with fluid).

Core biopsy performed.

Case Discussion

The imaging appearance favors a giant fibroadenoma or less likely a phyllodes tumor with necrosis.

Histopathology results were that of fibroadenoma. 

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