Mohs surgery is a highly precise technique used to remove skin cancer while preserving as much healthy tissue as possible. It offers the highest cure rates for many common skin cancers and is especially valuable in areas where tissue preservation and cosmetic outcome matter, such as the face, ears, nose, lips, and around the eyes.
What Is Mohs Surgery?
Mohs surgery is a specialized procedure in which skin cancer is removed layer by layer. Each layer is carefully mapped, processed, and examined under the microscope while you wait. If cancer cells remain at the edge, only the involved area is removed in the next stage. This method allows complete margin evaluation while preserving as much normal skin as possible, making it one of the most precise and effective treatments for skin cancer.
Why Is Mohs Surgery Used?
Mohs surgery is often recommended for basal cell carcinoma and squamous cell carcinoma when complete removal is especially important.
It is commonly used for cancers on the face, scalp, ears, nose, lips, eyelids, hands, and other areas where preserving healthy tissue matters.
It is also useful for:
- cancers that are large
- cancers that have come back after prior treatment
- cancers with poorly defined borders
- tumors with more aggressive features under the microscope
In these situations, Mohs surgery provides the highest level of precision and the greatest confidence that the cancer has been fully removed.
What To Expect On The Day Of Surgery
Mohs surgery is performed in stages during a single visit. After the area is numbed with local anesthetic, the visible tumor and a thin surrounding layer of tissue are removed. That tissue is then processed and examined under the microscope. If residual cancer is seen, another layer is removed only where needed. This process is repeated until the cancer has been fully cleared.
Because the tissue examination is done in real time, patients should expect to spend several hours in the office, as discussed in our pre-operative instructions. Part of that time is spent waiting while the tissue is processed and reviewed.
What Happens After The Cancer Is Removed?
Once the cancer has been completely removed, the wound is evaluated and the best repair option is discussed. Depending on the size and location of the surgical site, the area may be allowed to heal on its own, closed with stitches, or repaired with a flap or graft. The goal is to achieve both complete cancer removal and the best possible functional and cosmetic outcome.
Recovery After Mohs Surgery
Patients go home the same day. Written wound care instructions are provided, and follow-up is arranged when needed. Some swelling, bruising, tenderness, and mild drainage are common after surgery, particularly for procedures on the face. Most discomfort is manageable with simple measures. Healing time depends on the size of the wound, the type of repair, and the location of the surgical site.
Frequently Asked Questions
What is Mohs surgery?
Mohs surgery is a precise technique for removing skin cancer layer by layer while examining each layer under a microscope.
How long does it take?
Most procedures take 1-2 hours, but it may depend on how many stages are needed.
Will there be a scar?
Any skin surgery results in a scar, but Mohs surgery is designed to minimize tissue removal and optimize healing.
Will I be put to sleep?
Mohs surgery is usually performed with local anesthetic, so patients remain awake during the procedure. The area is numbed thoroughly before each stage.
What types of skin cancer are treated with Mohs surgery?
Mohs surgery is most commonly used for basal cell carcinoma and squamous cell carcinoma. In selected situations, it may also be used for other types of skin cancer when careful margin control is important.
If you have been diagnosed with skin cancer or have a concerning lesion, early evaluation is important. Our office can guide you through diagnosis, treatment options, and what to expect.