Little tiny masses in abdominal area

[mts]

All my life I have had symmetry... if I got a pimple on my right cheek, inevitably I would get a pimple on the left. A right chin hair and a left chin hair.
My breast cancer (fortunately) only came on the right side.
Anyway, I found this smallish lump that feels as though it "floats" above my rib cage about a 6 inches from the crease of my breast... ON BOTH SIDES!
I had a CT and a PET and both were negative.
Hemangioma has been ruled out. Whatever they are, they are benign, yet my onc wants them out. My mom had similar little masses. Her right shoulder was an eensy bit larger than her left. They said then that it was not uncommon.
I am not worried about them, but was wondering if anyone had any similar little masses. I have heard they are common and many women get them...
What do you all think?

Maria