Macro shot of a big skin mole on a woman's shoulder that should be inspected by a dermatologist.

早期発見 = より良い結果

皮膚がんのABCDE

皮膚ガン, which includes melanoma, basal cell and squamous cell carcinomas, is the most common cancer diagnosis in the U.S. and is one of the most preventable cancers.

Melanoma is the most dangerous type of skin cancer and can often present as a suspicious mole. It’s important to check your skin for suspicious moles once a month using the ABCDE rule and report anything unusual to your health care provider. It’s also a good idea to have a health care provider examine your skin every year.


The ABCDE rule:

あ対称

ほくろの片側がもう片側と一致しない

B注文の不規則性

The mole is uneven in shape with jagged, notched or blurred edges

A chart showing what a normal sized mole looks like on human skin.
A chart showing what an abormal sized mole looks like on human skin.

Color

The mole is not consistent in color

A chart showing what a normal sized mole looks like on human skin.
A chart showing what an abnormal sized mole looks like on human skin.

だiameter

ほくろの直径が6mm以上(鉛筆の消しゴムくらいの大きさ)

A chart showing what a normal sized mole looks like on human skin.
A chart showing what an abnormal sized mole looks like on human skin.

えvolving

ほくろの大きさ、形、色、高さに変化があったり、新たな症状(出血、かゆみ、かさぶたなど)が現れたりした場合

ここをクリック for information on possible signs and symptoms of non-melanoma skin cancers, including basal and squamous cell carcinomas.

If you have a darker skin tone

Skin cancer can be harder to identify on darker skin tones as compared to on light or fair skin tones. If you have darker skin, it’s a good idea to have your skin checks done by a health care provider, like a dermatologist, who is experienced in identifying skin cancer on all skin tones and knows what to look for.

Learn more about cancer in darker skin tones

More on Skin Safety

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