Wow, I got some resistance when I pushed for a definitive diagnosis but getting the initial Ultrasound / Sonagram didn't take too much persuasion.
I did find they became more responsive to my concerns when I emailed the breast care specialist.
In my experience they like to pigeon hole you and give a one size fits all approach until you put them in a position where they really have to look at you as an individual. Putting your concerns in writing forces them to think about their analysis. Which might be a tactful way of saying that subconsciously at least they start to consider what a jury might think of your letter or email someday.
In my situation I was nursing and pregnant. Based on the ultrasound there was a very high probability my lump was benign. They wanted to take a watchful waiting approach, which would have meant another physical exam when DD2 was 3 months old. I did not want to be doing more intrusive diagnostic testing while nursing a 3 month old.
Because the lump was small and near the surface they simply removed it rather than do a biopsy. Again, that was only after I put all of my questions in writing.
Good luck, ~Cath