Mongolian SpotsMongolian spots are flat, slate-gray to bluish-black, poorly circumscribed macules. They are located most commonly over the lumbosacral area and buttocks (Fig. 8-87), although they can appear anywhere on the body. The spots range in size from 1 to 10 cm and may be single or multiple (see Fig. 6-65). Ninety percent of African American infants, up to 80% of Asian infants and those from other darkly pigmented ethnic groups, and about 10% of Caucasian newborns have these macules, which contain accumulations of melanocytes deep within the dermis. No risk of malignancy is known, and Mongolian spots usually fade without therapy by age 7.