Blue nevus and its distinction from Mongolian spot and the nevus of Ota.
D006801:Humans; D049328:Mongolian Spot; D009506:Nevus; D009507:Nevus of Ota; D018329:Nevus, Blue; D009508:Nevus, Pigmented; D010858:Pigmentation; D012878:Skin Neoplasms
NEVUS, PIGMENTED; PIGMENTATION