I had a biopsy on a mole, and I was wondering if a pathologist could mistake an atypical mole as an ordinary benign mole? I hear that atypical moles can turn into cancer although it is uncommon. The main question I am wondering though is if my mole was atypical and did start to turn into melanoma, would there be any way to know since the mole is gone, and I wouldn't be able to watch for changes in it? If atypical cells were left and began to turn into cancer, would I start to see anything grow?