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Skin cancer

SKIN CANCER:

HOW TO REDUCE THE RISK OF GETTING A SECOND ONE

What are the aims of this leaflet?

This leaflet has been written to help you understand and reduce the risk of developing a skin cancer. It is aimed at people at increased risk, such as those who have been previously diagnosed with a skin cancer, or who have significant sun damage to their skin, or those on immunosuppressive drugs, particularly after an organ transplant. It describes the main types of pre-cancerous and cancerous skin growths, and explains the importance of detecting and treating them early.  It tells you how to reduce the risk of getting another skin cancer, and how these can be treated.

Why am I more at risk from skin cancer?

People who have already had a skin cancer or pre-cancerous lesion have generally had above average sun exposure (natural or artificial), and so may be at increased risk of getting more than one skin cancer.

How likely am I to get skin cancer?

Anyone can develop a skin cancer, and this risk increases with time; however, some people are more likely to do so than others and include those who have:

  • Fair skin that burns easily

  • Light coloured eyes, e.g. blue, grey or hazel

  • Naturally blonde or red hair

  • Numerous freckles

  • An outdoor occupation and/or intense sun exposure in the past or currently (without the use of sun screen)

  • An outdoor recreation such as gardening, cycling, golf or sailing (without the use of sun screen)

  • Frequent use of artificial sun lamps and sunbeds

  • Experienced sunburnt skin

  • A history of skin cancer

  • Had an organ transplant patient, a blood disorder such as leukaemia  and/or taken immunosuppressive drug therapy

How can I spot the signs of a skin cancer?

Treatment will be much easier if a skin cancer is detected early. For this reason, regularly check your skin for changes once a month. A friend, carer or family member can help you with this.You may need to use a mirror to check your back. 

You should see your GP if you have either:

Marks on your skin which:

  • Grow

  • Bleed

  • Change in appearance in any way

  • Never heal completely

Or:

  • Any existing mole that changes size, shape, colour or texture

What do skin cancers look like?

Some of the most common are described below:

  • Basal cell carcinoma (rodent ulcer). Most basal cell carcinomas are painless. People often first become aware of themas a scab that bleeds occasionally and does not heal completely. Some basal cell carcinomas are very superficial and look like a scaly flat red mark: others show a pale shiny rim surrounding a central crater. If left for years, the latter type can erode the skin, eventually causing an ulcer - hence the name “rodent ulcer”. Basal cell carcinomas can also be lumpy, with one or more shiny nodules crossed by small but easily seen blood vessels (see Patient Information Leaflet on Basal Cell Carcinoma).

  • Squamous cell carcinoma. A squamous cell carcinoma usually appears as a scaly or crusty raised area of skin, with a red, inflamed base. It may look like an irritated wart, or develop to form a bleeding ulcer. Most small squamous cell carcinomas are not painful, but pain in a growing lump is a suspicious symptom for squamous cell carcinoma. They occur most often on the face, bald scalp, neck, ears, lips, back of the hands and forearms. Organ transplant patients are more at risk from this form of skin cancer (see Patient Information Leaflet of Squamous Cell Carcinoma).

  • Melanoma. Melanomas are rarer, but are the most serious type of skin cancer.  They are usually an irregular brown or black spot, which may develop within a pre-existing mole or appear on normal skin that never had a mole in that place before. Any change in a mole, or any new mole occurring for the first time after the age of thirty, should be shown to your doctor.

Lesions related to skin cancers:

  • Actinic keratoses (also known as solar keratoses). Skin cancers may be preceded by a pre-cancerous condition known as actinic keratoses, caused by sun damage. These are usually pink or red spots, with a rough surface, which appear on skin that is exposed to the sun. The face, bald scalp, neck, backs of the hands and forearms are most often affected. Actinic keratoses may be easier to feel, as they are rough, than they are to see. A small number of them are precancerous, but early treatment may prevent them changing into skin cancer. Most actinic keratoses, however, will never become cancerous (see Patient Information Leaflet on Actinic Keratoses).

Remember, if you see any change in your skin - whether an ulcer or a spot - you must tell your doctor or nurse, who would refer you to a dermatologist if appropriate.

How is skin cancer diagnosed?

If your GP thinks that the mark on your skin needs further investigation, he or she may refer you to the local dermatology outpatients’ clinic for examination. Dermatologists use a specialist instrument called a dermatoscope to examine any suspect areas on the skin. If necessary, a small piece of the abnormal skin (a biopsy), or the whole area (an excision), may be surgically cut out and examined under the microscope. You will be given a local anaesthetic beforehand to numb the skin.

How can I reduce the risk of getting another skin cancer?

There are many ways in which you can help to reduce your chance of getting skin cancer. These are:

  • Learn how to recognise the early signs

  • Examine your skin regularly for these signs

  • Arrange an annual check from your GP or nurse

  • Protect yourself from the sun

  • Do not use sunlamps and sunbeds, or visit tanning shops regardless of how safe it may be advertised

  • Avoid getting a sun tan (see vitamin D advice below)

Exposure to the sun is the main cause of skin cancer. This does not just mean sunbathing; you expose yourself to the sun each time you do any outdoor activities, including gardening, walking, sports, or even a long drive in the car. The sun can cause problems all year round, not just in the summer. 

You can take some simple precautions to protect your skin by following the below ‘top sun safety tips’:

  • Protect your skin with clothing, and remember to wear a hat that protects your face, neck and ears, and a pair of UV protective sunglasses.

  • Stay in the shade between 11am and 3pm when it is sunny. Step out of the sun before your skin has a chance to redden or burn.

  • When choosing a sunscreen look for a high protection SPF (SPF 30 or higher) to protect against UVB, and the UVA circle logo and/or 4 or 5 UVA stars to protect against UVA. Apply plenty of sunscreen 15 to 30 minutes before going out in the sun, and reapply frequently during the day and straight after swimming and towel-drying.  

  • Keep babies and young children out of direct sunlight.

  • The British Association of Dermatologists recommends that you tell your doctor about any changes to a mole or patch of skin. If your GP is concerned about your skin, make sure you see a Consultant Dermatologist – an expert in diagnosing skin disease including skin cancer. Your doctor can refer you through the NHS.

  • Sunscreens should not be used as an alternative to clothing and shade, rather they offer additional protection. No sunscreen will provide 100% protection.

  • Remember that winter sun, such as on a skiing holiday, can emit just as much of the damaging ultra-violet light as summer sun (especially at high altitudes).

  • Do not use sunbeds or sunlamps.

  • Consider purchasing UV protective swim and beach wear which can particularly assist in protecting the trunk when swimming on holiday.

  • It may be worth taking Vitamin D supplement tablets (available from health food stores) as strictly avoiding sunlight can reduce Vitamin D levels. Always consult your GP or nurse before taking vitamins and self-medication.

 

Vitamin D advice

The evidence relating to the health effects of serum Vitamin D levels, sunlight exposure and Vitamin D intake remains inconclusive. Avoiding all sunlight exposure if you suffer from light sensitivity, or to reduce the risk of melanoma and other skin cancers, may be associated with Vitamin D deficiency.

Individuals avoiding all sun exposure should consider having their serum Vitamin D measured. If levels are reduced or deficient they may wish to consider taking supplementary vitamin D3, 10-25 micrograms per day, and increasing their intake of foods high in Vitamin D such as oily fish, eggs, meat, fortified margarines and cereals. Vitamin D3 supplements are widely available from health food shops.

 

 

Can skin cancer be cured?

Most skin cancers, if treated early, can be cured. That is why it is important to report any new or changing skin lesion to your doctor.

Basal cell carcinomas can be cured in almost every case and seldom, if ever, spread to other parts of the body. Treatment may be more complicated if they have been neglected for a very long time, or if they are in an awkward place - such as near the eye, nose or ear.

In a few cases squamous cell carcinoma and melanoma may spread (metastasise) to lymph glands and other organs.

How can skin cancer be treated?

There are various treatments available depending on the type of skin cancer.

  • Surgery. Most skin cancers are excised (cut out) under a local anaesthetic. After an injection to numb the skin the tumour is cut away along with some clear skin around it. Sometimes a small skin graft is needed.

  • Curettage and cautery. This is another type of surgery, done under local anaesthetic, in which the skin cancer is scraped away (curettage) and then the skin surface is sealed by heat (cautery).

  • Cryotherapy. Freezing the skin cancer with a very cold substance (liquid nitrogen).

  • Creams. These can be applied to the skin. The two used most commonly are 5-fluorouracil (Efudix) and imiquimod (Aldara).

  • Photodynamic therapy. This involves applying a cream to the skin cancer under a dressing for 4 to 6 hours. A special light is then shone on to the area and this destroys the skin cancer (see Patient Information Leaflet on Photodynamic Therapy).

  • Radiotherapy. X-rays are shone onto the area containing the skin cancer. Radiotherapy may also be used to relieve symptoms when a skin cancer has spread to other parts of the body.

The removal of lymph nodes is usually undertaken only if the cancer has spread there, causing them to enlarge.

Some patients with organ transplants may be advised to reduce or stop their immunosuppressant medication by their transplant surgeon in conjunction with their dermatologist. Sometimes, medication known as retinoids may be prescribed to inhibit further production of skin cancers.

Remember

Most skin cancers can be avoided if you follow these basic rules:

  • Check your skin for changes regularly

  • Report any skin changes to your GP or nurse promptly

  • Always protect yourself from the sun

  • Do not use sunlamps or sunbeds

Where can I get more information about skin cancer?

Several other leaflets produced by the British Association of Dermatologistson related topics are also available on this website: ‘Actinic keratoses’, ‘Basal cell carcinoma’, ‘Bowen’s disease’, ‘Keratoacanthoma’, ‘Melanoma’, and ‘Squamous cell carcinoma’.

Links to patient support groups:

Macmillan Cancer Support

89 Albert Embankment,

London, SE1 7UQ

Free helpline (for emotional support): 0808 808 2020

Free helpline (for information): 0808 800 1234

Web: www.macmillan.org.uk

Cancer Research UK

Lincoln's Inn Fields,

London, WC2A 3PX

Web: www.cancerresearchuk.org/sunsmart/

The Karen Clifford Skin Cancer Charity

Web: www.skcin.org

Wessex Cancer Trust

Bellis House, 11 Westwood Road

Southampton, SO17 1DL

Tel: 023 8067 2200

Fax: 023 8067 2266

Email: wct@wessexcancer.org

Web: www.wessexcancer.org

This leaflet is based on recommendations adapted from those of the French Society of Dermatology, the British Association of Dermatologists, and Cancer Research UK’s Sunsmart Campaign.

For details of source materials used please contact the Clinical Standards Unit (clinicalstandards@bad.org.uk).

This leaflet aims to provide accurate information about the subject and is a consensus of the views held by representatives of the British Association of Dermatologists: its contents, however, may occasionally differ from the advice given to you by your doctor.

This leaflet has been assessed for readability by the British Association of Dermatologists’ Patient Information Lay Review Panel

BRITISH ASSOCIATION OF DERMATOLOGISTS

PATIENT INFORMATION LEAFLET

PRODUCED DECEMBER 2005

UPDATED NOVEMBER 2010, OCTOBER 2013

REVIEW DATE OCTOBER 2016

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