Surgery for skin cancer | Cancer Research UK
Cancer Research UK on Google+ Cancer Research UK on Facebook Cancer Research UK on Twitter

Surgery for skin cancer

Landing page cancer type image

This page tells you about surgery for non melanoma skin cancer. You can find the following information


A quick guide to what's on this page

Surgery for skin cancer

The most common way to diagnose and treat small cancers is to remove the cancer under local anaesthetic. This is called an excision biopsy. The doctor removes the cancer with a border of healthy tissue all around it. This border of tissue is looked at closely under the microscope. This is to make sure it doesn't contain any cancer cells. If it does, you may need further surgery. Other types of surgery to treat skin cancer include

  • Cryosurgery  this uses extreme cold to remove the cancer
  • Curettage and electrocautery  this means scraping the cancer cells away (curettage). Then treating the area with an electric needle to kill any remaining cancer cells and seal the skin (electrocautery)
  • Mohs micrographic surgery (MMS ) – this is a specialist technique where a little tissue at a time is removed to keep as much healthy skin as possible
  • Wide local excision – you may need further surgery to remove more skin tissue. This may be because your skin cancer was not completely removed at biopsy or the border of healthy tissue that was taken away was too small. If a large area of skin has to be removed you may need a skin graft to repair the area
  • Lymph node surgery – if any of your lymph nodes are found to have cancer cells, you may need an operation to remove the nodes. This is rarely necessary. 

The type of surgery you have will depend on different factors including the type and size of the skin cancer, and on which part of the body the cancer is growing.

CR PDF Icon You can view and print the quick guides for all the pages in the treating skin cancer section.



Excision biopsy to diagnose and remove skin cancer

The main purpose of an excision biopsy is to both diagnose and treat a skin cancer. You usually have this under local anaesthetic. There is more about excision biopsy in the section on diagnosing skin cancer.  

For an excision biopsy, your doctor removes the cancer and a border of healthy tissue all around it. This border of tissue is closely looked at under a microscope. This is to make sure it doesn't contain any cancer cells and to be sure a large enough margin of healthy tissue has been removed. It’s not unusual to need further surgery after an excision biopsy to make sure enough tissue is taken away.


Types of surgery to treat skin cancer

These include

The type of surgery you have will depend on different factors including the type and size of the skin cancer, and on which part of the body the cancer is growing.


This means using extreme cold (with liquid nitrogen) to remove the cancer. You may sometimes have it for small skin cancers that have not grown too far into the skin. Or for actinic (solar) keratosis. Cryosurgery is not used on skin near organs such as the eye. The doctor sprays liquid nitrogen onto the area to freeze the cancer. This will feel very cold. Over the next month, a scab forms. The scab then drops off, taking the cancer cells with it.

Curettage and electrocautery

This is also called curettage and cautery, or C and C. It is only suitable for small basal cell skin cancers. You have it under local anaesthetic. Curettage means scraping away. A small spoon shaped tool or round blade, called a curette, is used to remove the cancer and the tissue around it. In case there are any cancer cells left behind, an electric needle is then used to kill the cells immediately around the wound. The electric current also helps to control any bleeding. 

C and C is often repeated 2 or 3 times to try to make sure all the cancer is gone. If you have a very small cancer you may only need it once. This treatment is not used quite as often now.

Mohs micrographic surgery (MMS)

This technique is named after the doctor who invented it – Dr Frederick Mohs. It is sometimes called margin controlled excision. It is a specialist technique and you may have to be referred to another hospital to have this treatment. MMS is most useful for

  • Basal cell cancers that have come back
  • Basal cell cancers that are growing into the surrounding skin tissue
  • Large skin cancers
  • Cancers in areas where it is important to remove as little tissue as possible (near the eyes and nose, for example)
  • Some rare skin cancers

You have this surgery under local anaesthetic. MMS is a slow process because a little cancer tissue is removed at a time. But you will keep as much healthy skin as possible. The tissue is immediately examined under a microscope. If the tissue contains cancer cells, more tissue is removed and examined. The surgeon continues in this way until they have removed all the cancer.

Wide local excision

Sometimes your biopsy results show that your skin cancer has not been completely removed. Or it was removed with a safety margin that is too small, for example with an excision biopsy. If this is the case you may have to go into hospital for an operation called wide local excision, to remove more tissue. This helps reduce the chance of the cancer coming back (recurrence).

You may have a wide local excision under local or general anaesthetic. How much tissue is taken away depends on the size and type of the cancer, where it is on the body and how much tissue may have already been taken away if you had an excision biopsy. You may have stitches in the area where the cancer has been removed. This may feel a little tight at first. But as it heals, the surrounding skin will stretch and the tightness should ease.

Sometimes the doctor has to remove a large area of skin. If this is the case you may need a skin graft or skin flap to repair the area.

Skin grafting and skin flaps

If you have had a large area of skin removed, you will need to have the area replaced (repaired). This can be done with skin grafting or with a skin flap.

Skin graft

A skin graft is a piece of skin taken from another part of your body. This is done during the operation to remove your cancer. It is done by a plastic surgeon under local or general anaesthetic.

A thin sheet of skin is removed from the donor site and placed over the area that needs to be covered. The donor site is usually somewhere where it will not be too obvious, such as your inner thigh. The donor site will look like a large graze. The skin will grow back quite quickly, usually over a couple of weeks. Sometimes the skin for the graft is cut out and the donor site repaired by stitching it back together.

The area where the skin graft is put will be very delicate while it heals. It is very important that the graft is not damaged while it is healing. You must be very careful not to knock it. Your doctor and nurses will be very careful that your wound does not become infected. You may have antibiotics to help prevent this. Most people having a wide local excision do not need a skin graft. The area heals up well enough without one.

A disadvantage of skin grafting is that sometimes the skin looks different from the surrounding area. It may be a different colour and appear as a dent compared to the surrounding skin.

Skin Flap

Another way of repairing a large wound is a skin flap. To do this, doctors use a flap of skin and the tissue underneath it (the subcutaneous tissue). The flap is taken from very close to your wound. It is cut away more deeply than for a skin graft, but is left partly connected to its original site. This means the skin flap is still connected up to your blood supply. The flap is then positioned over your wound and stitched in place. Then the area it has been removed from is stitched closed. The skin flap has its own blood supply, so is likely to heal well.

Skin flaps are a type of specialist surgery and are more complicated than doing a skin graft. The advantages are that this type of repair often looks better than a skin graft.  So it tends to be used where the appearance of the skin is most important, such as on your face. As this is complicated surgery, it is done by a specially trained dermatologist or by a plastic surgeon.

After both skin grafting and skin flap repair, your nurses and doctors will keep a close eye on your wound site. This is to make sure the site is getting a good supply of blood, which brings oxygen and food to the healing tissues.

Lymph node removal

If any of your lymph nodes are found to have cancer cells, you will have an operation to have the nodes removed. This is rarely necessary. But this type of operation is sometimes done for squamous cell cancers. It should be carried out by a plastic surgeon who specialises in skin cancer. The type of surgery you have will depend on where the skin cancer was. There are large groups of lymph nodes in the neck, armpit and groin. So if you have a skin cancer on your scalp or face, the lymph nodes on the same side of your neck may be removed.

There are some side effects from this type of surgery. Healing may take several weeks. You are likely to be in some discomfort after the operation.  A few people have long lasting problems with pain after lymph node surgery. 

Shoulder stiffness and pain are the most common problems after the lymph nodes under the arm have been taken out. This should get better as the area heals. You may find that you are unable to move your arm as freely as you could before the surgery. 

With lymph node dissection in the groin, swelling of the leg on the same side is the most common problem after surgery. This is called lymphoedema. It can usually be controlled with a combination of exercise, massage and wearing an elastic stocking on the affected arm or leg. Your doctor or clinical nurse specialist will be able to help you with any problems you may have.


Adjuvant treatment

This means treatment after surgery to try to lower the risk of a cancer coming back. If your doctor is worried that some cancer cells may have been left behind, you may be offered radiotherapy after your surgery.

Rate this page:
Submit rating


Rated 5 out of 5 based on 59 votes
Rate this page
Rate this page for no comments box
Please enter feedback to continue submitting
Send feedback
Question about cancer? Contact our information nurse team

No Error

Updated: 11 September 2014