I have two odd, brownish clearish moles, one on either breast. the right side one was very small to begin with, and is still small, but has doubled in size. should i be concerned? there is no pain.

See a dermatologist: They can decide if it looks like it needs to be biopsied, u would not want to miss anything bad.

Maybe: It is hard to answer your question without an examination. It is concerning when moles change - change in size, color, become irregularly shaped, itch, bleed. Most moles are not cancer. Most moles are relatively easy to remove and test. Please see your primary doctor or a surgeon to see if this needs to be removed and tested.