In most cases melanoma is formed directly on the skin, sometimes on the mucous membranes.It can be quite small in size, but is able to rapidly spread metastases via lymph and blood in any of the internal organs or to several.
On average, skin melanoma is found in 1% of all malignant tumors, but in recent years its prevalence is growing, affecting above all the females in the age group 30-40 years.
Of all the varieties of nevi most dangerous from the point of view of developing melanoma is considered to be the so-called boundary nevus.It looks like a flat or slightly convex spot with clear boundaries dark brown, dark gray or even black.The surface does not have such a nevus nodular, and smooth, and it does not grow hair.Today, doctors prefer to delete such nevi, not waiting
believed that most contribute to the transformation of a nevus into a melanoma following factors:
Ultraviolet radiation, according to doctors, contributes to the development of melanoma on the exposed parts of the body that people just substitute the sun's rays to produce chocolate tan.
Anyway, nevus is transformed into melanoma, which begins to grow at the same time deep into the skin and underlying tissues under the skin, to the side and upwards, that is beginning to rise above the level of the skin.The tumor metastasizes rapidly to nearby tissues and through the lymph and blood flow - in the internal organs.
Nevus now looks like a proliferating, almost black, towering above the skin pigment spot with ragged irregular edges and glossy surfaces or even as a small rash of dark brown or black mole around.Typical complaints of patients with melanoma - the local-burning pain, itching, ulceration, wet crusts, sometimes bleeding.
Ideally, each of us must come to an oncologist with the preventive purpose - to examine the type of their moles and the presence of hazardous - to remove them in advance.If you see that some of them change color, growing, hurts, becomes wet, bleeding - to the doctor is necessary to run immediately.All this is an indication for immediate hospitalization and surgery, which can be successful if it is to spend time.
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