Mohs for skin cancers that came back

A skin cancer that recurs after previous treatment is more challenging to cure than a fresh one, and recurrent tumors are among the clearest indications for Mohs micrographic surgery.

Recurrence complicates treatment in several ways. Scar tissue from the prior treatment can obscure the borders of the returning cancer, and recurrent tumors may extend in irregular, hard-to-predict patterns beneath the surface, making it easy for standard excision to leave some behind, which is part of why it recurred. Mohs addresses both problems directly: its complete microscopic margin examination tracks the tumor wherever it goes, including through scar tissue, and its mapping ensures any residual cancer is found and removed precisely.

Because of this, Mohs offers the best cure rate for recurrent basal and squamous cell carcinomas, meaningfully higher than re-excising blindly. For a patient whose skin cancer has returned, this is the moment to find an experienced Mohs surgeon rather than repeat a treatment that already failed once. Catching and fully clearing a recurrent tumor with Mohs is also important because each subsequent recurrence becomes harder to treat and more destructive, so getting it right on the recurrence, with the most thorough technique available, is well worth it.