Does this mole look cancerous?

Australia news

Source: Australian Elementary School

Everyone has more or less moles on their body.

Most moles are acquired and appear one by one after puberty.

According to the study's statistics, men 11-30 years old have 73 moles per person while women have 27 per person. There may be more Caucasians.

The seemingly weak and harmless birthmarks, however, as soon as they are stimulated, can break out into a very malignant tumor melanoma.

A recent study found that sunburn before age 7 was a significant risk factor for the continued development of birthmarks and melanoma.

01. Research on birthmarks and melanoma

Recently, a new study from James Cook University showed that birthmarks in preschoolers can predict their future risk of melanoma.

Dermatology registrar Ramez Barsoum said the project was jointly completed by him and Simone Harrison, who conducted preliminary studies on white children between 1985 and 1994.

In the first study, the researchers recruited 484 children through their parents, recorded the number and size of their birthmarks, and provided information about their sun exposure and lifestyle.

Because other people left or refused to attend, 51 people were eventually followed up.

Dr. Barsoum said, "From a melanoma development perspective, the number of moles is a risk factor. Anything larger than 5 mm increases the risk of melanoma."

"So, after 25 long years, high-risk children become high-risk adults?"

The doctor said that there have been few such studies to date, but "we really want to know how moles develop on a timeline. Understanding this can help identify high-risk children."

It turns out that those with many moles, especially children who are frequently exposed to the sun, have not only many freckles but also the most birthmarks as adults.

Some volunteers even had melanoma in their twenties.

02. Sun exposure before the age of 7 is very harmful

This study also supports current findings that sunburn before age seven is a risk factor that induces the continued development of birthmarks and increases the risk of melanoma.

Many previous studies have shown that children or teenagers can double their risk of melanoma as long as they are exposed to the sun.

美国 Sheila Friedlander, an expert in pediatrics and dermatology at the University of California, pointed out that people need to take good care of sunscreen throughout their lives, especially in infants and young children.

It is recommended that parents put sunscreen on their front door, car, or backpack every day so that they are easily accessible at all times.

You can usually wear clothing that will protect your child from sun protection, such as: B. lightweight long-sleeved shirts and pants, sun hats with a wide brim and sunglasses that can withstand UV rays.

Try to keep your child in a cool place. If there is no shade, you can open the parasol or stroller cover.

For kids sunscreen, reapply every 2 hours or use immediately after swimming or sweating, and teach kids to remember to apply sunscreen.

Dr. Barsoum also said it should be remembered that risks such as sunburn can be prevented as long as appropriate and safe sun protection measures are in place.

In particular, because Oceania is near the ozone hole above Antarctica, it will cause high levels of UV exposure in that area. Chinese parents should pay more attention to sun protection for their children since childhood.

Experts also gave some principles to distinguish good moles from bad moles: asymmetry

Common birthmarks are often round or oval with symmetrical sides. Malignant melanomas are usually irregular. If a horizontal line is drawn in the middle, the two sides will look asymmetrical.


When it comes to skin lesions, there are jagged edges or missing corners, protrusions, or no obvious boundaries.

Color uniform (color)

Normal moles are usually a uniform color. If the moles look uneven or are of different shades, be aware of this.


If the diameter is larger than 6mm or continues to grow, be careful.

Rapid uplift or change (uplift or development)

If the mole bulges or expands quickly, there may be a problem.

In addition, parents should pay special attention to birthmarks that are prone to friction, sun exposure, or trauma.

Finally, let me remind you once again that sun protection must be in place!

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* The above content has been reproduced from an Australian elementary school. Danny's change of content in Australia does not imply that this website is his own belief or responsibility for its authenticity.