There are a lot of different interesting things and phenomena in the world. Recently, in a friend’s house, I saw such unusual cells as Nevi (neuroma, nevulus), which causes wild delight in the eyes of every person who comes to us, even those who have been our guest for many years. To begin with, we can say that this is a tumor tissue that can lead to malignancy. In simple terms - rebirth. A nevus appears on the skin, mucous membranes, and less often internal organs