Regrowth

Hello, i had a question concerning regrowth. Almost 3 years ago i went to a dermatologist to see if she could help me with my KP or chicken skin. I also have probably 50+ moles, fair skin, freckles and after we talked about treatment for my KP she did a skin check on me. She shave biopsied 2 moles that were suspicious to her and I eventually had to get a wide excision done to remove them because they were moderate dysplasia. After a few trips and a few more shave biopsies, she did one on my left deltoid region that was small, raised, and just dark brown. Looked very normal to me. The nurse called me back and said it was clark nevus and i didn’t have to go back for just a checkup in 6 months. I noticed a few months the color started to reappear but it was flat, small and looked liked a freckle. Well life happened and I never did return for my routine skin checkups. Last week, my youngest daughter signed to be boo boo and pointed to my arm. When i looked, I realized that the freckle is now raised, larger, at least 2 differ colors, assymestric with irregular borders. I will be calling Monday to get in but was just wondering if this could be due to not getting all of the mole the first time or if any of you have experienced a previous mole removed that was ok but later returned as something not ok. Thanks for any comments.