Vascular lesions and pigmented lesions are common abnormalities of the skin and underlying tissue. These types of lesions include a variety of birthmarks and freckle-like pigmentation, caused by the sun.
Vascular lesions are known as birthmarks and pigmented lesions are skin spots caused by melanocyte cells in the skin. These are the cells that produce skin pigment. Common pigmented lesions include age spots and other brown spots on the skin.