Brief analysis of four common types of malignant melanoma

Malignant melanoma is a more serious type of melanoma, which is more harmful to the patient's body. In fact, there are many different types of malignant melanoma . Here are some common types of malignant melanoma.

Common types of malignant melanoma include:

(1) Lentigo maligna type

Occurs on exposed areas such as the face and neck. The cause is ultraviolet rays from sunlight exposure. Freckles appear first, and soon turn black. After several years or decades, nodules and small tumors may appear on some of these black spots. The elderly are more susceptible to it, and the frequency of occurrence accounts for 3% to 5% of all malignant melanomas. Recently, there has been a slight increase. It has the best prognosis among malignant melanomas. If the opportunity is missed and simple treatment is performed, the prognosis will be poor.

(2) Superficial spreading

It can occur anywhere on the body. It is initially flat and appears black, brown, or a mixture of the two. Sometimes part of the tumor may protrude from the skin. In Japan, the frequency is 10% to 15% (more than 40% in white people). It is generally considered to have a worse prognosis than lentigo maligna, but compared with other types of malignant melanoma, the prognosis is still better. The most susceptible age is over 50 years old.

(3) Nodular type

Malignant melanoma can occur anywhere in the body and metastasizes rapidly. The lesion is initially hemispherical, peak-shaped, stem-shaped, or flat and raised (see the photo on the upper right of the previous page). The frequency of occurrence is over 40%, and the age of onset is over 50 years old. There should be no hesitation in treatment, and it is generally believed that nodular malignant melanoma has a poor prognosis.

(4) Acral lentiginous nevus type

The malignant melanoma called acral lentiginous nevus is a common malignant melanoma in Japanese people. The frequency of occurrence is over 40%, and the soles of the feet account for nearly 30%. In addition, it can also occur in the middle of the fingers, the vulva, and the bottom of the fingers. The symptoms are almost the same as those of the malignant lentiginous nevus. It starts with spots and then develops into nodules and ulcers. It occurs more often on the soles of the feet, and at a glance it looks like an octopus's eye. However, because there are black spots around it, it can be distinguished if you look closely. If the skin texture on the soles of the feet is unclear and blackened, you must pay attention, because the prognosis is not better than that of nodular malignant melanoma.

The above is an introduction to the common types of malignant melanoma. I hope it will be helpful to everyone. Once you have malignant melanoma, you must go to the hospital for treatment in time to avoid missing the best time for treatment.

For more information, please visit the melanoma disease special topic at http://www..com.cn/waike/hssl/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.