Which moles are easy to become cancerous? Everyone has several or even dozens of moles. However, some moles can also have malignant lesions and even canceration. Once it becomes cancerous, it may be life-threatening. Let's take you to see which moles are easy to become cancerous.

Which moles are easy to become cancerous? 1 1, nevus cell nevus.

The most common ones include borderline nevus, mixed mole's nevus and intradermal nevus. Mostly in the face and neck, but also in other parts. Most of them occur in childhood, and the number of people aged 20-29 reaches the maximum, with an average of 20-30 moles per person; Then the number of moles will decrease with age. After the age of 60, each person has only 4 to 6 moles.

Borderline nevus: brown-black spots with smooth and hairless surface; Pathologically, nevus cells are located at the junction of epidermis and dermis, so it is called borderline nevus.

Mixed mole: The mole is slightly higher, the surface is smooth and the boundary is clear; It is a part of the borderline nevus, and the nevus cells go down into the dermis. Pathologically, there are nevus cells at the junction of epidermis and dermis and in the superficial dermis, so it is called mixed mole.

Nevus intradermalis: the hemisphere is more prominent, the color turns brown, sometimes even skin color, and may be hairy. From mixed mole to adulthood, nevus cells completely enter the dermis, which is called intradermal nevus.

Indications of malignant transformation: If the nevus cell nevus suddenly increases, festers, bleeds or small satellite nevus appears beside the nevus, we should consider the possibility of malignant transformation and go to a specialist for examination and treatment in time.

2, dysplasia nevus:

Although it is easy to become malignant, especially those with melanoma in the family, fortunately, there are very few yellow people. Caucasians are more common, so foreign countries advocate removing this mole as soon as possible.

It usually happens in adolescence or even adulthood. How long is it in the chest, back and waist? It is slightly larger than ordinary moles, usually more in number, smooth or slightly higher in the center, and the color can be brown, brown-black or orange-red, with different shades.

3, congenital giant nevus:

It exists at birth, mainly in the head, face, back and waist. It is a large black spot with rough surface and often coarse black hair, such as animal skin, also known as "animal skin mole".

With the growth of children's age, wrinkles or verrucous protrusions may appear on the surface. The malignant degree of this nevus is about 10%, so skin grafting should be done as soon as possible. Those who cannot be removed should be closely observed, and those with nodules and ulcers should be biopsied in time.

4, congenital small nevus:

At birth, but the size is less than 20cm (referring to the size of adulthood). It is characterized by irregular brown-black spots, slightly raised with age, smooth or rough surface, and sometimes black hair. The malignant rate of congenital nevus was 0.65438 0%. Therefore, congenital small nevus is best removed.

Usually sunburned variegated nevus malignant nevus is also called malignant melanoma. Among the inducing factors, one is to be exposed to the ultraviolet rays of strong sunlight, especially in summer, when the sunlight lasts for a long time. The moles growing on the neck, arms, scalp and face should be protected from the sun, so as to avoid the skin from being exposed to the sun for a long time.

So, what is a mole with a tendency to malignant transformation? Its typical feature is that the nevus is variegated, that is, on the basis of pink, accompanied by red, brown or black, with a diameter greater than 5 mm and an unsmooth border. Some people are born with congenital giant nevus with a diameter greater than 20 mm, and the risk of malignant melanoma in this nevus is 5%~20%.

Many people think that the mole on the palm or sole is a symbol of blessing. The saying that "one foot on one star can raise a thousand soldiers" and "one foot on seven stars has the right to be rich at the same time" is quite popular among the people. When a baby is born, if a mole grows on the soles of his feet, he will be considered a "blessed person". Some people think that there will be no problem if there is hair on the raised mole. These understandings are all misunderstandings. There is no hair on the mole, and it is not necessarily related to whether the mole will become malignant. Moles that grow on the palms or soles of the feet are often rubbed, and over time, they are likely to become malignant melanoma.

From the problem of malignant transformation of pigmented nevus mentioned above, we must first make clear whether it is congenital or acquired. Congenital giant nevus is the most prone to malignant transformation, followed by congenital small nevus, followed by moles on soles of feet, toes, palms, fingers and nails. Because it is easily stimulated by friction, it is relatively easy to become malignant. These should be removed as soon as possible or closely observed, and removed in time if there are changes. No matter whether there is hair on the surface or not, moles with hemispherical protrusions on the head and face will basically not become malignant, and no treatment is needed except for cosmetic surgery.

Tip 5 Signs of malignant transformation of pigmented nevus:

A, asymmetry, the shape of both sides of the mole is different;

B, irregular edges;

C, the color is uneven, and the same mole has different colors;

D, diameter more than 6 mm;

E, uplift, that is, a part of the mole is raised high.

In these cases, it should be taken out as soon as possible for pathological examination.

Which moles are easy to become cancerous? First of all, moles are located in special parts such as nasal cavity, oral mucosa, palm, sole, heel, anus and genitals. It is easy to become malignant because of frequent friction. Need to pay attention to whether there is the possibility of malignant transformation!

Followed by the head and neck, due to long-term sun exposure, moles in these parts will also get sick.

I believe that many people find themselves caught after introspection, and many people have a small heart. However, even if there are spies in these places, there is no need to panic. Not all moles become cancerous. However, when the mole has the following manifestations, it is necessary to go to the hospital as soon as possible.

1, molar asymmetry

Ordinary nevus is symmetrical on both sides, and malignant melanoma is irregular in shape. Draw a dividing line in the middle of the mole, and the two halves look extremely asymmetrical.

2, the edge is not smooth

Ordinary nevus has a smooth edge and a clear boundary with the surrounding skin, while malignant melanoma is mostly uneven, irregular and jagged.

3. The color suddenly darkens

Ordinary nevus are mostly pigmented nevus with uniform color, while malignant melanoma is often mixed with multiple colors. Within a few months, the color suddenly deepens, with different shades, and it will turn black, blue or begin to fade.

4. The diameter becomes larger

Ordinary moles will not change all year round, generally less than 5 mm, while malignant melanoma will increase rapidly in a short time. More attention should be paid to moles with a diameter of more than 6 mm. Nevus that show obvious signs of enlargement within a few weeks or months should also be careful.

5, itching, bleeding, pain and other discomfort.

Ordinary moles will not feel uncomfortable, and the surface of malignant melanoma will change from smooth to rough. If there is erosion, ulcer, itching, incurable and pain, you need to be vigilant.

6. Small moles appear around

There are many new small moles or black spots within 2 cm around the nevus, which are called "satellite foci" in technical terms and will be accompanied by regional lymphadenopathy. This is an important manifestation of melanoma, which means that cancer cells divide and expand. Be highly alert to the malignant transformation of this mole.

1, benign nevus, can't go.

Many people ask to get rid of moles for beauty rather than health, so they don't have to go. Only one third of melanoma is caused by malignant transformation of pigmented nevus. Even if it is a relatively large, swollen, hairy mole that grows in areas that are easy to rub, such as palms, soles, armpits, belts and thighs, it is recommended to observe it closely first and not to remove it blindly.

2. Surgical resection is the first choice.

Although high-energy laser removal of moles has little trauma to the skin, it can't remove moles deep in the skin, and it is easy to relapse. In addition, if malignant melanoma is misdiagnosed as benign pigmented nevus, it may delay the treatment opportunity after laser treatment. Therefore, it is recommended to go to a professional hospital for surgical resection and further pathological analysis, which is both safe and insurance.

3. The nevus that still recurs after repeated Dot mole should be removed as soon as possible.

Repeated laser Dot mole and repeated high-energy stimulation may activate nevus cells and accelerate the malignant transformation of benign nevus. If you have been to Dot mole for many times before, but it grows back soon, it is recommended to go to the hospital for removal as soon as possible.

4. Be sure to go to a regular medical institution for treatment.

Some beauty salons without medical qualifications can't distinguish between benign and malignant moles. If the nature of the mole is misjudged, it may delay the illness. It is easy to treat incompletely or excessively, leading to recurrence or scarring.

Which moles are easy to become cancerous 3 1 and which parts are easy to rub?

For example, moles near palms, soles of feet, nails, nasopharynx and anus, and people wearing bras and belts are more likely to become cancerous because they are easily stimulated by friction.

Among them, some data show that about half of the common types of melanoma in China are distributed in the skin of limbs.

Therefore, if you find moles on your hands or soles, you should be alert to the possibility of cancer.

2, often bask in the sun.

The canceration of pigmented nevus is also related to excessive ultraviolet radiation. In particular, moles on the head and neck may also get sick, because they are most vulnerable to sunlight.

3. Wound site

Some melanoma patients have a history of trauma, such as crush injury, puncture injury, extrusion and so on. The pigment in the injured part precipitated not fade away, and the cells became malignant during the repair process.

There are five kinds of moles on the body, and caution is a signal of cancer.

In addition to paying attention to the location of long moles, some changes of moles can not be easily ignored, or they may be manifestations of cancer.

The Centers for Disease Control and Prevention of the United States recommends using the ABCDE method for self-testing-

Answer: Asymmetric common moles are often round or oval with symmetrical sides; Most malignant melanomas are irregular, with a horizontal line drawn in the middle and asymmetrical on both sides.

B: The outline of normal pigmented nevus with uneven boundary is clear and smooth; The edge of malignant melanoma is irregular, serrated or serrated.

C: Nevus with normal color change are generally single in color, brown or grayish black. Melanoma is mostly dirty black, with shades of brown, tan and black, and may even appear blue, pink and white. Among them, when blue appears, you need to be especially vigilant.

D: The size of an ordinary mole is usually less than 5mm. But if the diameter of the mole is greater than 5~6 mm, you should pay attention. In particular, moles with a diameter greater than 1 cm should be taken out for pathological examination.

E: Surface protuberance A normal person's mole should be smooth, but some early melanoma will have slight protuberance, which is higher than the skin surface.

In addition, if the mole grows rapidly in a short time, it will cause pain, burning sensation, even ulcers, infections, bleeding and so on. In the surrounding area, it is also possible that the mole is sick.

It is recommended to go to the hospital for examination in time. Once the disease is diagnosed, it should be treated immediately to avoid the deterioration of the disease and reduce the chance of cure.

To prevent nevus from becoming cancerous, do these five things well.

1, don't scratch with your hands.

Don't always scratch the long mole, otherwise the pigmented nevus will be repeatedly rubbed and damaged, which may lead to malignant transformation.

2. Don't pull out the hair on the mole at will.

Some people think that the long hair on the mole is definitely not good, and it is best to pull it out or flatten it. This idea is all wet!

People's skin has hair follicles, and the hair follicles under nevus cells are usually larger, so it is normal for hair to grow a little harder and longer.

If you want to trim, be careful not to cut it too short, and you can't pull it out directly, so as not to stimulate hair follicles and cause infection.

3. Daily sun protection

Ultraviolet rays can penetrate the skin surface and stimulate nevus cells, thus increasing the risk of cancer.

So it is recommended to do a good job of sun protection. During the day, ultraviolet rays are strongest between 10 a.m. and 4 p.m. It's best to wear an umbrella, a top hat or sunscreen when going out at this time.

4, to prevent trauma and other stimuli

If you don't pay attention on weekdays, foreign bodies such as small thorns and pencils may penetrate into the skin and form moles.

It is suggested that when there is foreign body residue, clean the punctured part with clear water first, then disinfect it with alcohol or hydrogen peroxide, and then take it out as much as possible.

If it is too deep to take out, you can go to the hospital and ask the doctor to take it out for you. Don't make a move yourself.

5. Correct removal of moles

For the sake of beauty, some people will choose to go to moles, which is nothing wrong.

But it should be noted that moles must be completely removed. At present, plastic surgery adopts laser Dot mole or surgical resection:

★ Laser therapy

For pigmented nevus with a diameter less than 3 mm, laser treatment is more suitable, with less trauma and pain, and will not have much impact on normal life and work.

However, if the skin treated by laser is too shallow and remains, the mole may recur and need to be laser again.

However, the same mole can't be treated by laser for more than 3 times, otherwise it will stimulate the mole and increase the chance of malignant transformation. If it has not been taken out for more than 3 times, it is recommended to take it out surgically.

★ Surgical resection

Pigmented nevus with a diameter greater than 3 mm can be removed by plastic surgery to avoid obvious scar hyperplasia caused by non-surgical treatment.

In addition, the excised nevus specimens need to be sent for pathological examination to clarify their nature. If the removed nevus is diseased, it should be treated further in time.