What is the primary purpose of Mohs surgery?

The primary purpose of Mohs surgery is to treat skin cancer by systematically removing layers of skin affected by cancer. This surgical technique is specifically designed for excising cancerous cells while preserving as much surrounding healthy tissue as possible. During the procedure, thin layers of skin are removed and examined microscopically for cancer cells. If cancer cells are found at the margins, another layer is taken. This method allows for complete removal of the cancer while minimizing the impact on healthy tissue, making it particularly effective for basal cell carcinoma and squamous cell carcinoma.

The other options do not align with the specific intent of Mohs surgery. Removing healthy skin is counterproductive and not a surgical goal. Performing a skin graft is a separate procedure often done after larger excisions or to cover wounds, which is unrelated to the core function of Mohs surgery. Additionally, while evaluating skin lesions can be part of the diagnostic process, Mohs surgery is not intended for evaluation but rather for the definitive treatment of diagnosed skin cancer.