Exactly my question. I've been googling all morning whether or not it's possible to tell, and no, she didn't explain to me how she could tell that it was a fatty lump when she palpated it. It's hard, not squishy. And my breast aches, which, according to her, it shouldn't. What she said was nothing shows on any of the scans, so it's breast tissue. It feels hard because it's behind dense tissue. Take Tylenol. I walked out of there feeling like I'm a hypochondriac because I have pain and "shouldn't." But, if I felt with 100% degree of certainty that she was correct and could tell, I would not worry. I just don't.