Malignant melanoma

Malignant melanoma is the skin tumors that produced in skin and other organs by the melanocytes, occur in the skin, ranking No. 3 skin malignant tumors. Melanoma is becoming the first fatal skin disease. The type of malignant melanoma are more clinical in general divide into two types: in situ malignant melanoma and invasive malignant melanoma.

Primary melanoma is caused by the melanin induced cell proliferation in skin. Its strong performance for the color of the nodules increased gradually, around the can around to flush. Incidence for Primary melanoma is lower than basal cell carcinoma, squamous cell carcinoma of low grade, and the transfer took place early, high mortality, so early diagnosis, early treatment is important. Great color of congenital nevus of the renewal of a malignant melanoma cancer found in children, the other occurred in an adult.

Malignant melanoma growth: According to the proliferation of tumor cell growth mode radiation can be divided into growth and vertical growth phase. Tumor cells along the epidermal basal layer and dermal papilla between the eccentric growth to spread around as radiation growth, common in the freckle type, superficial spreading type and acral malignant melanoma in the early stages, and sustainable for several years, as in this period to the primary tumor or lymph node metastasis to the few, for a relatively simple surgery to remove the effect that can be better. When the tumor to the dermis, subcutaneous tissue deep vertical growth referred to as infiltration, nodular melanoma growth without radiation directly into the vertical growth phase, the period of lymph node metastasis-prone.

Malignant melanoma invasion depth: malignant melanoma metastasis and prognosis of the risk, and the lesion thickness and level of violations is closely related to the skin. Measured in millimeters malignant melanoma lesions has now become the measure of the thickness of the risk of lymph node metastasis and prognosis standards. At present, some of the world's leading medical centers, use the Breslow eyepiece micrometer made directly measuring the thickness of the tumor to estimate the prognosis, they will be divided into tumor thickness ≤ 0.75mm, 0.75 ~ 1.5mm and> 1.5mm3 file, and some authors will be> 1.5mm were further divided into several files, in order to further observe the tumor thickness and prognosis.