Mohs Surgery

What is Mohs surgery?

Mohs surgery , also referred to as micrographic surgery, is a technique used to treat various forms of skin cancer. The process carefully removes cancerous tissue one layer at a time, checking each under a microscope. This innovative approach removes all cancer cells while protecting healthy tissue.

Some skin cancers treated with Mohs surgery include:

• Basal cell carcinoma: This is the most common form of skin cancer, often appearing as a pearly or flesh-colored bump.
• Squamous cell carcinoma: A more aggressive type of skin cancer, squamous cell carcinoma may appear as a red, scaly patch or open sore.
• Melanoma (early stages): In certain cases, Mohs surgery can be used to treat early-stage melanomas, offering patients a more targeted treatment option.

How to prepare for Mohs surgery

Preparing for Mohs surgery is simple, and a few small steps can help ensure a smooth experience. Before your appointment, review any instructions provided by your dermatologist and let the care team know about medications you take, including blood thinners, supplements or prescriptions. Your doctor may advise you on whether to pause or adjust certain medications ahead of time.

On the day of your procedure, eat a normal meal and plan to be at the office for several hours. Mohs surgery is performed in stages, and the total time varies depending on how many layers of skin need to be removed. Wear comfortable clothing and consider bringing a book, tablet or something to pass the time between stages.

If your surgical site is near the eye, nose or mouth, you may want to arrange a ride home, as swelling or bandaging can make driving uncomfortable. Most patients do not need sedation, but if your doctor anticipates anything different, they will let you know in advance.

What to expect from Mohs surgery

Mohs surgery is a highly precise, tissue‑sparing procedure performed under local anesthesia. You’ll be awake and comfortable throughout the process. The surgeon removes a thin layer of skin from the cancer site and examines it under a microscope while you wait. If cancer cells remain, another layer is removed and evaluated. This process continues until all cancerous tissue is cleared.

Because each layer is checked immediately, Mohs surgery offers the highest cure rate while preserving as much healthy skin as possible. Once the cancer is fully removed, your surgeon will discuss the best approach for closing the wound — this may involve stitches, a skin flap or allowing the area to heal naturally.

After the procedure, you’ll receive detailed wound‑care instructions. If you experience mild swelling, tightness or tenderness in the first few days, know that it’s normal. Most patients resume normal activities quickly, though your doctor may recommend avoiding strenuous exercise until the area has healed.

At Mount Nittany Health, Mohs surgery is offered in our outpatient physician office instead of the main hospital. This approach often leads to lower costs and fewer facility fees, making care more affordable.

Every patient’s needs are unique, but choosing an office-based setting can mean a more convenient experience and potential savings — while still receiving high-quality, innovative care close to home.