According to the given biopsy report, there is no evidence of any malignant cells but some atypical cells are seen and as the melanocytes are found near the peripheral margins, so it is advisable to completely excise these lesions. It can be a shave biopsy or deep elliptical cut. I would suggest you to get it examined from a dermatologist who can correlate it clinically.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.