When it comes to [nevus], I believe everyone is familiar with it. Almost everyone will have it (and more than one) in his life. The common term [nevus] is called [pigmented nevus (nevus cell nevus) in medicine. It is a benign tumor of skin composed of melanocytes. Nevus is generally divided into three types: the first is what we call birthmark and skin lesions found after birth; The second is benign melanocytic tumor. The third is hamartoma, that is, there are too many or too few normal tissues in some parts. The following common problems about [moles] can help us understand and correctly understand these large and small [black spots] on the body, which are normal and which need our Read More …