As this is a first round lady with a mass and the previous imaging is not available, would you perform a biopsy?
This has a typical ultrasound appearance for a hamartoma. 10 years ago a 34mm right hamartoma was confirmed at biopsy. As there is no interval change in size and typical ultrasound features, the lady may be reassured and no further biopsy is requireed.
34mm, non vascular mass with mixed reflectivity within it. No axillary lymphadenopathy.