Mohs Surgery

Mohs surgery or Mohs Micrographic Surgery is a treatment for some types of skin cancer- most often a type called basal cell carcinoma (rodent ulcer).

How is Mohs Surgery done?

  1. Your skin is numbed using a local anaesthetic injection. We then remove visible cancer and the specimen examined under a microscope to see if there is anything left. This takes around 45-60 minutes. We will ask you to sit in the recovery area while you are waiting.
  2. Then we draw a diagram (a “Mohs map”) of the removed specimen. The microscope check will show if the cancer has been completely removed. If there is any cancer remaining, it is carefully marked on the Mohs map and tells the surgeon precisely where he/she needs to go back to take further specimens.
  3. If we need more specimens, we will bring you back into the theatre and take these and then once more check under the microscope. We repeat this cycle until all of the cancer has been fully removed.

How long does Mohs surgery take?

This surgery takes several hours. Because no one can tell how big the cancer will be and what the size of its roots are, we ask you to prepare to stay with us the whole day (0830-1730).

Who will look after me whilst I’m having Mohs surgery?

There is a team of highly experienced Mohs nurses that will be responsible for your care throughout your stay as well as your surgeon. They will be available to support you through your stay and can answer any questions you may have.

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What are the benefits of Mohs surgery?

This type of surgery is different from other forms of surgery in that it allows the immediate and complete microscope examination of the specimen. It is not possible for a surgeon to see the roots of a skin cancer under the skin surface without a microscope. Mohs surgery gives the best chance of cure for non-melanoma skin cancers compared to all other treatments- even if the skin cancer has grown back following previous treatment. Mohs surgery is also very valuable for preserving normal skin around important sites such as the nose, lips, eyes or ears and keeping the wound as small as possible.

Patient Testimonial

I initially attended Everything Skin Clinic as I was deeply concerned about a mole on the side of my torso which my GP wished to be referred. Upon inspection by Doctor Madan, he was satisfied that there were no concerns which was a relief to say the least. Prior to leaving the practice, I asked if the Doctor could take a quick look at a very small white spot on my face and immediately it was identified that it could be a BCC. Following a closer inspection, it was confirmed that it was indeed a BCC and within the space of two weeks you had me back to the practice to undergo the necessary treatment using Mohs surgery. As I have had the same cancer five years previously just above my eye, I was deeply worried and concerned that the scarring would be very noticeable in this location. It is now two weeks since surgery and I would like to extend a huge thank you from the bottom of my heart to Dr Madan and his team for making me feel so at ease throughout the whole procedure. I am without doubt hugely pleased with the results so far and I think that within another couple ofweeks with scarring should be virtually invisible. I would recommend Dr Madan and the whole team to anybody experiencing the same problems.

Are there any alternatives to Mohs surgery?

There are 2 main alternatives to Mohs surgery: Radiotherapy (x-ray treatment) and removal of the skin cancer in the standard way without the guidance of the microscope checks.

We will discuss the different treatment options with you at your consultation. Not all treatment choices are suitable or possible for your particular skin cancer and they do not generally offer as high a cure rate as Mohs surgery.

Is there a chance the skin cancer might come back?

No treatment for skin cancer is 100% effective. Skin cancers can grow back after any type of treatment, but the risk is much lower following Mohs surgery.

Mohs surgery offers the best cure rate for basal cell cancer compared with all other treatments. The risk of a BCC returning after Mohs surgery is around 1-2% (1 or 2 in 100 patients) for a basal cell carcinoma that has never received treatment before

Around 6-8% (6 to 8 in 100 patients) for basal cell carcinomas that have grown back after treatment for example with standard surgery or radiotherapy.


Mohs surgery results in a surgical wound the size of which reflects the true size of the skin cancer. Mohs surgeons have extensive training in wound reconstruction and plastic surgery and in most cases the Mohs surgeon will perform the wound repair.

There are generally 3 ways to repair a wound:

Natural Healing

Allowing the wound to heal naturally without additional surgery. This is normally only possible in certain sites.


Closing the wound directly with stitches.

Skin Graft/ Skin Flap

Using a skin graft or skin flap to repair the wound. Some patients will need to transfer to other hospitals for their repair by eye surgeons, ENT surgeons or plastic surgeons.

If this applies to you, we will discuss this with you in the clinic in advance. Unless you are being transferred to another hospital you will normally be able to go home the same day.


Wound care

You will have a dressing over your wound that will stay in place for 2 – 7 days depending on the repair and may be quite large and bulky. Most patients return to the Dermatology Department to have their sutures removed one week later. In most cases, you will feel quite well after 48 hours though may not wish to return to work for 1 week once we remove the sutures.

Returning to work

Each case will be different and we will advise you when you can return to work. At 6 weeks we will review the wound and we will discuss skin care/sun protection.

What happens after I have gone home?

We perform the operation under local anaesthetic, as a result, you may feel quite tired afterwards and you should plan a more restful 2 days or so after surgery.

Is there anything I can do to help myself?

If you smoke you should avoid smoking for at least 3-4 days before and after surgery as smoking slows down the wound healing process. Similarly, try and avoid alcohol for 3 – 4 days before and after surgery as this can make your wound bleed more.

Where can I find out more about Mohs surgery?

We would advise you not to “Google” Mohs surgery on the internet as you may see incorrect details or overly dramatic pictures.

Who will carry out my treatment?

At Everything Skin Clinic™, we have a team of highly trained Consultant dermatologists, who have completed specialist training in Dermatology and are on the specialist register of the General Medical Council. All our consultants hold substantive contracts with the best Dermatology centres in leading NHS hospitals. Therefore, you can be certain of the highest quality private dermatology acne care.

Why choose Everything Skin Clinic™ for Mohs Surgery

At Everything Skin Clinic, we offer a range of treatments and can offer one, or a combination of treatments to achieve the best results.

Unlike many other clinics, we can offer diagnosis and treatment all under one roof by expert consultant dermatologist, so you know you’ll be in safe hands.

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