Acral lentiginous melanoma

What is acral lentiginous melanoma? 

Acral lentiginous melanomas are rare, and form on the palms, soles of feet and around the nail.

Acral lentiginous melanomas are the most common form of melanoma in people with darker skin, but they can occur in any skin colour.

What is subungual melanoma?

Subungual melanoma is a type of acral lentiginous melanoma that develops under the fingernails and toenails.

Symptoms

Subungual melanoma and acral lentiginous melanoma may appear as a streak in a nail – often brownish or black. This can form in the fingernails or toenails and most often develops in the thumb or big toe. As the cancer in the nail grows, the nail may become damaged. Most streaks in the nail are not cancerous, but it’s important to contact your GP as soon as possible to get it checked.

On the palms or soles of the feet, acral lentiginous melanoma may be noticed by changes to a spot or mole. It could be an irregularly-shaped growth, that changes or is a different colour or present as a raised patch of thicker skin.

Advice for people with darker skin tones

There is a common misconception that melanoma skin cancer doesn’t occur in people with black or darker skin tones. While it is true that skin with higher levels of melanin has some natural protection against the sun, this does not mean that people with darker skin are completely protected against melanoma.

This misconception may mean that people of colour are unaware of the signs of acral lentiginous melanoma. Its appearance can be similar to other common skin conditions, resulting in misdiagnosis. These factors mean acral lentiginous melanoma is often diagnosed at a later stage, which may therefor result in poorer outcomes for patients.

Acral lentiginous melanoma occurs in just 2-8% of people with lighter skin tones, however occurs in 35-60% of people with darker skin tones.[1]

Not directly linked to sun exposure

Acral lentiginous melanoma is not directly related to sun exposure and the incidence rates are similar across all skin types.

Remember – whatever your skin type, even if you feel you don’t need suncream to protect you against sunburn, it can still prevent other forms of skin damage, such as skin ageing, hyperpigmentation and skin cancer.

 

Living With Melanoma podcast series- Episode 2: Skin Tone & Melanoma:

We have created a podcast series ‘Living with Melanoma’ in partnership with ITN Business. One episode of this series explores the common misconception that melanoma skin cancer doesn’t occur in people with darker skin. This episode is hosted by Nyambe (Yam) Sumbwanyambe, host of the Black Sherpa Podcast. Yam is joined by acral lentiginous melanoma patient, Carole Amba, along with her doctor, Professor Catherine Harwood and also Dr Suchitra Chinthapalli, both Consultant Dermatologists. They discuss awareness of melanoma in people with darker skin tones and the importance of protecting all skin tones. Listen via the link below as well as your usual podcast platforms.

Listen to this episode

*This podcast series has been fully funded by MSD in the UK. Episode two is guest hosted by an MSD employee, however MSD have otherwise had no input on content and ITN have reserved full editorial control.

Bea’s story

During 2022, Bea was diagnosed with stage 3B acral lentiginous melanoma. She was placed on dabrafenib & trametinib targeted therapy for 12 months as adjuvant treatment. Bea is keen to share her story to provide hope and reassurance to those who may be going through a similar experience.

Read Bea’s full story

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