Is melanoma in situ a malignant tumor?

summary

Malignant melanoma is a kind of highly malignant tumor, which mostly occurs in the skin and ranks the third in skin malignant tumors (6.8% - 20%), accounting for 1% - 2% of all malignant tumors in foreign countries. The incidence rate of melanoma has been increasing in the past decades. The newly diagnosed melanoma patients are all over the world and the incidence rate is 3% to 8% per year. Let's share my experience with you.

Is melanoma in situ a malignant tumor?

Malignant melanoma often occurs in adults and the elderly over 30 years old, and is rare in children. According to statistics. Children under 12 years old accounted for only 4.2% of all malignant melanoma. Malignant melanoma originated from melanocytes is more common in the elderly, with slow growth and low malignancy; Those originated from nevus cells are more common in younger people with rapid growth, higher malignancy and early metastasis.

The early manifestations of malignant melanoma are black lesions on the normal skin, or the original nevus expands and deepens in the near future. Along with the increase, the damage protrusion is plaque or nodular, or mushroom or cauliflower, and the surface is easy to break and bleed. There may be irregular halo or depigmentation halo around. If it grows to subcutaneous tissue, it is subcutaneous nodule or mass. If it spreads around, satellite like damage may appear.

Malignant freckle nevus: malignant freckle nevus (lentigo maligna) is rare, mainly occurs in men aged 60-80 years old, almost all in the exposed parts, especially the face, a few can be located in the forearm or leg. The lesions began to be pigmented macules, gradually expanded to the surrounding areas, with a diameter of several centimeters. The edge is irregular, the color is light brown or brown, and there are often dark brown or black dots in it, and hypopigmentation can be seen in the self extinction area.

matters needing attention

In daily life, eat more fruits and vegetables, keep optimistic mood, pay attention not to fatigue, pay attention to the recovery of the body, in addition, if there are any symptoms should go to the hospital for examination, and corresponding treatment, these are to actively do.