Prevalencia y características clínicas de la mancha mongólica en los recién nacidos del Área Sanitaria de Ferrol (España)

Mongolian spot is a grey or bluish macule usually arising in the lumbosacral area. The aim of this study was to determine the prevalence and clinical features of this entity in our population, and the influence of several parameters related to both the mother and the neonate on its occurrence. We performed a descriptive study between May 2008 and November 2009. A total of 1,000 live newborns admitted to the Hospital Arquitecto Marcide in Ferrol (Spain) were reviewed. Mongolian spot was present in 18.9% of the newborns. The most commonly involved sites were the lumbosacral area and buttocks in 155 (15.5%) and 53 (5.3%) newborns, respectively. The following factors were found to be associated with a higher prevalence of Mongolian spot: full-term or postterm newborns, female sex, Caucasian race, higher birthweight, cesarean section, and maternal age more than 30 years old with at least one previous pregnancy.