Your pathology should state the degree of atypia. Mild, moderate or severe. Maybe call your derm office and ask them to send you a copy of the pathology report. You can always post it here and those with experience can comment. When it is mild there is never a need for add'l treatment. If a moderate doesn't show clear borders to the pathologist they will generally recommend a conservative re-excision. Severe is always excised even if borders are clear. I have never had a biopsy report not say a degree of atypia.  going on biopsies no 18, 19 and 20 right now). Any sort of atypia is not melanoma. There is a slight chance that severe may progress to melanoma. The main indication with atypical moles is your elevated risk for developing a later melanoma unrelated to the atypical mole.