Mohs Surgery on the Nose: Preserving How It Looks and Works

Why the Nose Is the Most Common Site for Facial Skin Cancer

The nose is the most prominent central feature of the face and receives more cumulative UV exposure than almost any other body surface. Estimates suggest that 25–30% of all facial skin cancers occur on the nose. Basal cell carcinoma (BCC) is by far the most common, particularly on the nasal tip, nasal ala (the rounded outer part of the nostril), and the nasal sidewall.

Squamous cell carcinoma (SCC) can also occur on the nose, particularly in areas of prior sun damage or previous skin cancer treatment. Because the nose is visually prominent and critical to breathing, both preserving its appearance and maintaining the patency of the nasal passages are essential goals of treatment.

Why Mohs Surgery Is Ideal for Nasal Skin Cancers

The nose is listed in Mohs surgery appropriate use criteria as a “H zone” (high-risk area) for all BCC and SCC, meaning Mohs is the recommended approach for virtually all skin cancers in this location. Here is why:

• Tissue conservation: The nose has limited available skin for reconstruction. Every millimeter saved by Mohs’s precise layer-by-layer technique translates directly into a smaller, more easily repaired wound.
• Complex architecture: The nose has many surfaces, angles, and specialized structures (ala, tip, columella, dorsum, sidewall) where cancer can extend in unpredictable directions. Standard excision with fixed margins is less reliable in this setting.
• Cartilage proximity: The lower portion of the nose is supported by cartilage (not bone). Cancer that invades cartilage changes what repair is possible and what the nose will look like afterward. Detecting and removing exactly the right amount of tissue minimizes unnecessary cartilage sacrifice.
• High cure rates: Mohs surgery achieves approximately 99% five-year cure rates for primary BCC on the nose, compared with 89–92% for standard excision.

Special Anatomic Zones of the Nose

The nose is made up of distinct aesthetic zones, and where the cancer is located significantly influences reconstruction options:

• Nasal tip: The rounded end of the nose. Defects here are among the most challenging to reconstruct because of the thick, sebaceous skin unique to the tip.
• Nasal ala: The rounded outer portion of the nostril. Key to maintaining a normal-looking nostril shape. Defects here often require flap reconstruction.
• Nasal sidewall: Usually easier to reconstruct than the tip or ala because skin from the cheek can be borrowed.
• Nasal dorsum (bridge): Often reconstructed by advancing skin from the adjacent forehead or glabella.
• Columella: The strip of tissue between the nostrils. Defects here are complex and may require specialized techniques.

Reconstruction Options for Nasal Defects

After all cancer is removed, reconstruction is planned based on the defect’s size, depth, and location. Your Mohs surgeon will discuss the best option for your specific wound:

• Primary closure (direct stitching): Only possible for small defects on the sidewall or dorsum where there is enough loose skin nearby to pull together without distorting the nose.
• Secondary intention healing: Some small defects on concave nasal surfaces can heal well on their own with proper wound care. This avoids a scar at a donor site but takes several weeks.
• Full-thickness skin graft (FTSG): Skin from behind the ear or the pre-auricular area provides an excellent color and texture match for nasal skin. Best for shallow defects where the nasal lining is still intact.
• Nasolabial flap: Skin from the cheek crease beside the nose is rotated to cover a nasal ala or sidewall defect. Usually a reliable, good-looking repair.
• Bilobed flap: A two-lobed rotation flap using skin from the nasal sidewall to cover tip or ala defects. A workhorse technique for moderate-sized nasal tip wounds.
• Paramedian forehead flap: For large defects—especially full-thickness defects of the nasal tip or ala—a strip of forehead skin is pivoted down to cover the nose. This is a two-stage procedure: the flap is attached and left connected to the forehead blood supply for 3–4 weeks, then divided in a second operation. It produces excellent results but involves a temporary visible pedicle of tissue between the forehead and nose.
• Cartilage grafts: When cartilage has been removed, a cartilage graft (from the ear or rib) may be placed to provide support and prevent collapse of the nostril.

What to Expect During and After Surgery

Mohs surgery on the nose follows the same staged approach as elsewhere, but reconstruction may be more involved. Here is what the process often looks like:

1. Mohs excision stages (under local anesthesia, same day). Average 1–2 stages for most nasal cancers.
2. Reconstruction—performed the same day for most repairs, or planned for a separate visit for forehead flap cases.
3. Suture removal at 5–7 days for facial wounds.
4. Follow-up at 1 month and 3 months to assess healing; second stage of forehead flap at 3–4 weeks if applicable.
5. Scar improvement with laser or dermabrasion may be offered at 6–12 weeks after healing is complete.

Expect swelling, bruising, and some distortion in the first 2–4 weeks. Nasal swelling in particular can persist for several months. The final result is typically much better than what you see at 4–8 weeks post-surgery.

When to See a Dermatologist

• You notice a new or changing spot on your nose—any sore that does not heal within 4–6 weeks deserves evaluation
• A spot on your nose bleeds easily, crusts, or has a pearly, translucent appearance
• You have previously been treated for skin cancer anywhere on your face and notice a new suspicious lesion
• You are a patient with a history of significant sun exposure, fair skin, or a personal/family history of skin cancer

Frequently Asked Questions

Will I lose my nose shape after surgery?

The goal of nasal reconstruction is specifically to restore normal appearance and nasal function. For most skin cancers that are caught before they extensively invade cartilage, experienced Mohs surgeons and reconstructive surgeons can achieve results that look very natural. Larger cancers or those involving the structural cartilage do require more complex repairs, and some subtle change in nasal shape may be unavoidable. Your surgeon will be very clear with you about what to expect for your specific case before proceeding.

Will breathing be affected?

Most nasal skin cancers are on the external surface of the nose and do not affect breathing. If reconstruction requires a graft or flap over or near the nostril, your surgeon carefully designs the repair to maintain nostril opening. In rare cases where significant cartilage must be removed, a cartilage graft is used to preserve airway patency. Notify your surgeon if you experience new nasal obstruction after surgery.

How visible will the scar be?

This varies by location, repair type, and individual healing. Skin grafts initially look different (often pinker or slightly different in texture) from the surrounding nose skin but tend to blend in significantly over 6–12 months. Flap repairs generally match the surrounding skin better because the skin comes from adjacent areas. Scars on the nose tend to fade and flatten well, and any residual irregularity can often be improved with laser resurfacing or dermabrasion about 8–12 weeks after the repair.

What is the forehead flap and is it as bad as it sounds?

The paramedian forehead flap sounds alarming but is a time-tested, reliable technique for large nasal defects. After the first stage, you will have a narrow strip of skin connecting your forehead to your nose for about 3–4 weeks. This is not painful and is usually covered with a dressing. After the second stage (division of the pedicle), the forehead incision heals with a fine scar that is typically hidden in the hairline or forehead creases. The nasal result is generally excellent. Your surgeon will show you photographs of results before you decide.

Trusted Resources

• American Academy of Dermatology – Skin Cancer
• Skin Cancer Foundation – Mohs Surgery
• American College of Mohs Surgery – Patient Information
• Mayo Clinic – Mohs Surgery

Always consult a board-certified dermatologist or Mohs surgeon for diagnosis and treatment recommendations specific to your situation.