Xiao Wang, 29, always suffers from foot pain for no reason. At first he thought it was caused by walking too much. Later, when he washed his feet, he found that the mole on his feet seemed to be getting bigger. Later, Xiao Wang began to pay attention to this mole and found that it really got bigger. Xiao Wang hurried to the hospital for medical treatment. The doctor told Xiao Wang that the mole on his foot had become cancerous and belonged to malignant melanoma.
There are moles on the body, some of which are caused by congenital genetic and developmental defects. The longer the mole on some people, the more it may be related to the following factors.
1. Ultraviolet radiation leads to abnormal increase of skin melanin;
2. Affected by bad eating habits or living habits, leading to endocrine disorders;
3. Long-term use of inferior cosmetics will damage the skin;
Taking some drugs for a long time will lead to hormonal changes.
Most of the time, moles are benign, so there is no need to worry, but if these four kinds of moles appear, you should be vigilant, because they are likely to be related to cancer. 1. Congenital giant nevus
Congenital nevus was born with a baby. Generally speaking, congenital nevus is relatively safe, but if it is large, we should be careful, especially for congenital giant nevus with a diameter of > > 20cm, the malignant rate is about 6%.
2. moles growing in special parts
Some moles with special positions are more prone to malignant transformation. First of all, moles that grow on limbs or easily rubbed parts, such as nails, soles of feet and palms, are easy to become cancerous after repeated rubbing or stimulation. Secondly, moles that grow on the lips like black spots, if they are particularly large and dark, should be alert to black spot polyp syndrome. Finally, be careful of moles that grow in oral mucosa, conjunctiva, vagina and other parts, which are more likely to become malignant than moles in other parts.
3. Sudden change of moles
The mole on the body suddenly increases and darkens for unknown reasons, or it is accompanied by pain, itching, ulceration and bleeding, which is most likely a manifestation of melanoma. Melanoma is a rare malignant tumor with high recurrence and metastasis rate and high mortality rate. Clinically, about 60% of malignant melanoma comes from the malignant transformation of nevus, so it is very important to identify the malignant transformation of nevus as soon as possible for the diagnosis of early melanoma.
4. Spider nevus
Spider nevus is mostly related to liver cancer. It is called spider nevus because it looks like a spider, and it is a red vascular nevus, which mostly appears in the chest, neck, abdomen, face and so on. Liver function decreased and estrogen inactivation weakened. After the accumulation of estrogen, the capillaries dilate, and red spider nevus will appear.
Teach you to distinguish benign nevus from malignant nevus.
1. Benign nevus: mostly congenital nevus; Small diameter; Shape rules; The edges are neat; Monochrome; 10 years or so has no obvious change.
2. Malignant nevus: larger in diameter (more than1cm); Irregular shapes are asymmetrical and tend to increase gradually; The edge is irregular, and small moles gradually appear around it; The main colors are black, brown, brownish black, blue, pink and so on. , there are mixed colors and color changes; There is a slight bulge. If the above-mentioned nevus is accompanied by nevus ulcer or pain, you must seek medical diagnosis in time.