Skin growths - fatty; Xanthelasma
A xanthoma looks like a sore or bump under the skin. It's usually flat, soft to the touch, and yellow in color. It has sharp, distinct edges.
Your doctor will examine the skin. Usually, your doctor can diagnose a xanthoma simply by looking at your skin. A biopsy of the growth will show a fatty deposit.
Goldman L, Ausiello D. Cecil Textbook of Medicine. 22nd ed. Philadelphia, Pa: WB Saunders; 2004.
Habif TP. Clinical Dermatology. 4th ed. St. Louis, Mo: Mosby; 2004.