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A Mongolian spot, also known as slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients.
The Mongolian spot is a congenital developmental condition exclusively involving the skin. The blue colour is caused by melanocytes , melanin -containing cells, that are deep under the skin. [ 6 ] Usually, as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back ), the buttocks , sides, and shoulders . [ 6 ]
Large, pigmented, often hairy congenital nevi. They are important because melanoma may occasionally (10 to 15%) appear in them. [citation needed] Nevus of Ito and nevus of Ota: Congenital, flat brownish lesions on the face or shoulder. [20] Nevus of Ito. Mongolian spot: Congenital large, deep, bluish discoloration which generally disappears by ...
Mongolian spot (congenital dermal melanocytosis, dermal melanocytosis) Mongolian spot; Mulberry molar; Nager acrofacial dysostosis; Nasal glioma (brain-like heterotopia, cephalic brain-like heterotopia, glial hamartoma, heterotopic neuroglial tissue, nasal cerebral heterotopia, nasal heterotopic brain tissue) Nasolacrimal duct cyst; Nevus ...
Phakomatosis pigmentovascularis is a rare neurocutanous condition where there is coexistence of a capillary malformation (port-wine stain) with various melanocytic lesions, including dermal melanocytosis (Mongolian spots), nevus spilus, and nevus of Ota.
Before any potential benefits appear, the procedure reportedly initially leaves small, raised bumps under the skin, creating a temporary honeycomb-like texture. This effect has led some to ...
Furthermore, mongolian spots, large birthmarks, and the consumption of food products with blue or purple dyes can also result in the bluish skin tissue discoloration and may be mistaken for cyanosis. [2] [3] Appropriate physical examination and history taking is a crucial part to diagnose cyanosis.
The Mongolian spot appears with a very high frequency (85-95%) in Asian, Native American and African children. [80] The skin lesion reportedly almost always appears on South American [81] and Mexican children who are racially Mestizos [82] while having a very low frequency (5-10%) in Caucasian children. [83]