Melanoma Skin Cancer

NHS

Melanoma is a type of skin cancer that can spread to other organs in the body.

Signs and symptoms of melanoma

The most common sign of melanoma is the appearance of a new mole or a change in an existing mole. This can happen anywhere on the body, but the most commonly affected areas are the back in men and the legs in women.

Melanomas are uncommon in areas that are protected from sun exposure, such as the buttocks and the scalp. In most cases, melanomas have an irregular shape and are more than 1 colour. The mole may also be larger than normal and can sometimes be itchy or bleed. Look out for a mole that gradually changes shape, size or colour.

What causes melanoma?

Melanoma is caused by skin cells that begin to develop abnormally.

Exposure to ultraviolet (UV) light from the sun is thought to cause most melanomas, but there's evidence to suggest that some may result from sunbed exposure.

The type of sun exposure that causes melanoma is sudden intense exposure. For example, while on holiday, which leads to sunburn. Certain things can increase your chance of developing melanoma, such as having:

  • lots of moles or freckles
  • pale skin that burns easily
  • red or blonde hair
  • a close family member who's had melanoma

Who's affected

Melanoma skin cancer is the 5th most common cancer in the UK. Around 16,000 new cases of melanoma are diagnosed each year.

More than 1 in 4 skin cancer cases are diagnosed in people under 50, which is unusually early compared with most other types of cancer.

Over recent years, skin cancer has become much more common in the UK. This is thought to be the result of increased exposure to intense sunlight while on holiday abroad. More than 2,300 people die every year in the UK from melanoma.

Diagnosing melanoma

See a GP if you notice any change to your moles. They'll refer you to a specialist clinic or hospital if they think you have melanoma. In most cases, a suspicious mole will be surgically removed and closely examined to see whether it's cancerous. This is known as a biopsy.

A biopsy usually involves removing a small sample of tissue. But in cases of melanoma, the whole thing is usually removed from the beginning.

You may also have a test to check if melanoma has spread to your lymph glands (nodes). This is known as a sentinel node biopsy.

Treating melanoma

The main treatment for melanoma is surgery, although your treatment will depend on your circumstances. If melanoma is diagnosed and treated at an early stage, surgery is usually successful.

If melanoma is not diagnosed until an advanced stage, treatment is mainly used to slow the spread of the cancer and reduce symptoms. This usually involves medicines that target specific genetic changes in the melanoma, such as BRAF inhibitors, or medicines that boost your body's immune responses to the melanoma.

Once you have had melanoma, there's a chance it may return. This risk is increased if the cancer was more advanced or widespread.

If your cancer team feels there's a significant risk of melanoma returning, you'll need regular check-ups to monitor your health. You'll also be taught how to examine your skin and lymph nodes to help detect melanoma if it returns.

Preventing melanoma

Melanoma is not always preventable, but you can reduce your chances of developing it by avoiding getting sunburned (even going pink in the sun).

Most people get sunburned while on holiday abroad, or in the UK during the summer while doing outdoor activities such as gardening, sunbathing or playing cricket.

On these occasions you need to be very careful, particularly if you have pale skin and many moles. You can help protect yourself from sun damage by using sunscreen and dressing sensibly in the sun. Sunbeds and sunlamps should be avoided.

Regularly checking your skin can help lead to an early diagnosis and increase your chances of successful treatment.

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