Microscopic surgery

My son has a lot of moles. About 6.5 month ago one of the moles was removed since “it looked suspicious”.
The following is the pathology report findings:
"This slightly elevated lesion, benign by silhouette, is characterized by nests of monomorphous melanocytes at the dermoepidermal junction in the upper part of the dermis.
Diagnosis:   Left Lower Back – Clark’s Nevus Compound Type."
The removed mole area healed well, but  about 4 weeks ago we noticed a small brown mole in the scar area. Doctor said that the mole is “re-appearing” and recommended to repeat surgery.  This time he suggested a wider cut that will require a few stitches.
My concern is that we still will not know whether all the “mole tissue” has been removed until pathology is done and another surgery may be required if not.
Is there a better technique? Would a microscopic surgery be a better solution or it is used only for cancer patients?

[Alan Rockoff, MD]

No, I think your doctor is right.  A simple excision will be sufficient to be sure that the mole is all out.  Micrographic (not microscopic) surgery is advisable for some tumors at higher risk of recurrence.  It isn't used for benign lesions and isn't necessary.

Take care.

Dr. Rockoff