Frequent question: Is acral melanoma rare?

Acral lentiginous melanoma is a very rare type of skin cancer, and it affects people with darker skin more than any other demographic. Other types of melanoma are caused by sun exposure that damages your skin.

How common is acral melanoma?

Acral lentiginous melanoma accounts for 29-72% of melanoma in dark-skinned individuals but less than 1% of melanoma in fair-skinned people, as they are prone to more common sun-induced types of melanoma such as superficial spreading melanoma and lentigo maligna melanoma.

Does acral melanoma grow?

The main sign of acral lentiginous melanoma is a black or brown discoloration that appears on the sole of the foot or palm of the hand. It may resemble a bruise or stain, but over time it grows in size.

How aggressive is acral melanoma?

Acral lentiginous melanoma is a very aggressive, malignant cutaneous tumor which has a predilection for the plantar surface of the feet, palms of the hand, and the digits. The lesion presents as a rapidly spreading, darkly pigmented patch and may display varying degrees of pigmentation.

Is acral nevus common?

AM accounts for 3–15% of all melanoma, making it the least common subtype of cutaneous malignant melanoma (CMM) [2–4]. Unlike AM, acral melanocytic nevi are relatively common, with an estimated prevalence of 28–36% in the USA [1,5].

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How did Bob Marley get melanoma?

Marley died from an acral lentiginous melanoma, which is a form of skin cancer. He had been diagnosed in 1977, and it had spread from under a nail of his toe. He first discovered the melanoma while playing football in 1977. A foot injury seemed worse than usual, and got worse over time.

Is acral melanoma cutaneous?

Acral lentiginous melanoma is a subtype of cutaneous malignant melanoma. It is comprised of malignant melanocytes, which can become invasive with time.

How common is melanoma on foot?

Foot melanoma is a type of cancer that affects the pigment-producing skin cells in the foot. Around 3–15% of melanomas occur on the foot. Melanoma is not the only type of skin cancer, however. In fact, it only accounts for about 1% of skin cancers, yet it causes the highest number of deaths of any skin cancer.

How fast does foot melanoma grow?

Melanoma can grow very quickly. It can become life-threatening in as little as 6 weeks and, if untreated, it can spread to other parts of the body. Melanoma can appear on skin not normally exposed to the sun. Nodular melanoma is a highly dangerous form of melanoma that looks different from common melanomas.

Is acral melanoma hereditary?

Anyone can develop ALM. Some people may develop ALM due to a genetic risk factor. People whose family members have developed melanoma, including ALM, may be more prone to the disorder. Research into the specific causes and risk factors for ALM is ongoing.

Can you have melanoma for years and not know?

How long can you have melanoma and not know it? It depends on the type of melanoma. For example, nodular melanoma grows rapidly over a matter of weeks, while a radial melanoma can slowly spread over the span of a decade. Like a cavity, a melanoma may grow for years before producing any significant symptoms.

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How long does it take acral lentiginous melanoma to spread?

The duration of time starting from when these patients first noticed the pigmented lesions up to when they first visited the clinic ranged from 5 to 30 years (average duration: 13.3 years).

What does foot melanoma look like?

Aside from looking like a changing mole, a melanoma on the foot can appear as a: Brown or black vertical line under a toenail. Pinkish-red spot or growth. New spot or growth where you injured your foot.