Melanoma skin cancer

Pictures of abnormal moles, melanoma and skin changes

These pictures are examples of abnormal moles or areas of skin that are melanoma. Or may appear to be melanoma, but were found to be non cancerous (​benign).

Melanoma that has developed from a suspicious dark mole

Melanoma that has developed from a suspicious dark mole.

Suspicious irritated mole found not to be melanoma

Suspicious irritated mole found not to be melanoma.

Melanoma from a mole that was once an even colour and shape but has now changed

Melanoma from a mole that was once an even colour and shape but has now changed.

Melanoma from a mole with changing shape and colour

Melanoma from a mole with changing shape and colour.

Melanoma that has developed from a long standing mole that is starting to spread

Melanoma that has developed from a long standing mole that is starting to spread.

A new change to an area of skin (lesion) that was abnormal and turned out to be melanoma

Melanoma from a new, odd-looking, growing lesion on the skin.

Doctors sometimes use the term lesion to describe a finding on the skin. This means an area of skin that looks different from the surrounding area.

Melanoma on the back

The following 2 examples contain 2 pictures. The first picture in each example is taken from a distance. The second picture from each example is a close up of the melanoma.

Example 1 - Picture of a melanoma from a new, dark lesion on the skin
New, dark lesion on the skin proven to be a melanoma.

Example 2 - Picture of melanoma that may or may not have developed from a mole
Melanoma presenting as a stand out lesion.

Melanoma that has developed from a changing area of the skin with an irregular shape and colour

The blue markings in this picture below outline the area where the melanoma is. This is to show the surgeon the area they need to remove.

Melanoma that has developed from a changing area of the skin with irregular shape and colour.

Melanoma that hasn't developed from a mole and is starting to spread

Melanoma that’s not developed from a mole and is starting to spread.

If you have any skin changes

See your GP if you notice any changes that are not normal for you.

Find out more about seeing your GP if you are worried

The pictures above have been provided by the St John’s Institute of Dermatology at Guy’s and St Thomas’ Hospital. With special thanks to Dr Theodoulos Drousiotis for sourcing these photographs.

Last reviewed: 01 Apr 2025

Next review due: 01 Apr 2028

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