FAQS
Why do moles grow back after removal?
Explore more FAQsA mole can return when some cells remain after removal. Have regrowth or a change assessed before assuming it is benign or arranging further treatment.
Had a mole removed and it's come back?
Why does regrowth happen?
Mole cells that aren’t fully destroyed or removed during a procedure can multiply and cause the mole to reappear. How this occurs depends on the removal method used.
Radiofrequency surgery
During RF removal, colour changes in the treated tissue make it difficult to see whether any mole cells remain. To minimise scarring, the doctor will generally avoid over-treating charred or browned tissue — which means a small number of cells may occasionally be left behind.
Shave biopsy or shave excision
If the shave doesn’t go deep enough into the skin, cells in the deeper layers of the dermis can remain and eventually regenerate.
Laser
If the light wavelength, intensity, or number of sessions isn’t sufficient to destroy all mole cells, regrowth can occur. In some cases, gentler settings are deliberately used to reduce scarring risk, which means multiple treatments are planned from the outset. If the full treatment course isn’t completed, the mole may return. Learn more about laser mole removal.
Cryotherapy
Freezing does not always remove a lesion completely. Suitability and treatment time depend on the lesion; cryotherapy is not a general alternative for removing a mole that needs diagnosis. Learn more about cryotherapy.
Surgical excision
If the excision margins are too narrow, mole cells at the edge of the removed tissue may remain. This is more likely in areas where wide margins are technically difficult to achieve — such as parts of the face or the lower legs. Learn more about surgical excision.
What to do if a mole returns
Regrowth can be benign, but a returning or changing spot should be assessed before assuming it is harmless or arranging more treatment. The doctor can review the original diagnosis, any pathology and the current appearance.
If we treated the mole, contact the clinic to arrange a review. Further treatment depends on that assessment and your concerns.
Further information
MBBS, MA (Virtual Comm), Grad Cert Hlth Info, Grad Dip Comp Inf Sci
Had a mole removed and it's come back?
Doctor-led assessment at our Melbourne CBD clinic. No referral needed.
Find out about cosmetic mole removal