Seborrheic keratosis are non-cancerous growths. They are often brown but can vary from light brown to black. They differ in sizing from a few millimeters to larger than ten millimeters in diameter. Their principal element will be the waxy, “pasted-on” or “caught-on” look. The data on this Web page is https://www.sgvascularctr.com/understanding-benign-tumor-treatment-options/