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Hi this past Monday I went in for an ultrasound for my left breast (I had one done earlier… around 1.5 years ago and the diagnosis was fibroadenoma). After the sonographer reviewed the images with the residing doctor in the radiology clinic, she said that I would need to do a biopsy, either a fine needle one or core, which my doctor would discuss with me.

My question is, is there an increased likelihood that the fibroadenoma/tumour is now cancerous? Because the first time I didn’t need to do the biopsy but now I do? Could it have been cancerous before but just diagnosed incorrectly as fibroadenoma? Do doctors order biopsies if they suspect cancer or only as a precaution?

I just gave birth last November and my “fibroadenoma” has increased in size since breastfeeding (or at least that’s when I noticed it was bigger). Can fibroadenomas grow? I’ve read that they are usually less than 3 cm in diameter but I’m sure mine is bigger than that… approx 5-6 cm. The shape is distinguishable (it’s oval-shaped round), fairly smooth and moveable which I’ve read is more likely to be characteristics of a benign tumour, but can some cancerous tumours have these qualities anyway? Because I’ve heard that a phyllodes tumour is hard and mobile as well.

I am undergoing a core biopsy this Monday and I am so scared! I’m only 23!