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A second Danish observer was doctor and zoologist Daniel Frederik Eschrichtmainly based in Copenhagen. In he wrote of the "mixed" babies he had mancha mongolica at the lying-in hospital.

Captain Gustav Frederik Holm wrote in that mancha mongolica Greenlandic interpreter Johannes Hansen known as Hanserak attested to the existence of the birthmark over the kidney region of newborns, which grows larger as they grow older.


It is not the first time that the resemblance between the Japanese and the Mancha mongolica has been pointed out. Soren Hansen confirmed this, and further hypothesized that in both Japan and Greenland the mancha mongolica might indicate direct descent from a black ancestral lineage "a sign of direct descent from a black racial element".


See Historical race concepts. A missionary in Bethel, Alaskaa traditional gathering place of Yup'ik people mancha mongolica, reported that the spots were common on children. Rudolf Trebitschan Austrian linguist and ethnologist, spent the summer of on the West Coast of Greenland, and listed all the examples he mancha mongolica across.

Gessain went to north Labrador inlooking for children with these spots. Mancha mongolica Dr Saxtorph, medical advisor to the Mancha mongolica department part of the Danish governmentwrote that the Greenlanders do not like outsiders to see or discuss these birthmarks; "they doubtless feel as a reminiscence of the time when they lived on a low cultural level".

About Mongolian Spot

Communications on Greenland," X. In half-breed European-Esquimaux, Hansen says he has encountered it. Revista de Ethnologia, In Central America, according to these authorities, mancha mongolica spot is called Uits, "pan," and it is an insult to speak mancha mongolica it.

It disappears in the tenth month. They may persist as long as persistent Mongolian spots.

Mancha mongolica - スペイン語 - 英語 翻訳と例

The prevalence of Mongolian spots varies among different ethnic groups according to the overall depth of pigmentation. Mongolian spots are common among Asian, East Indian, and African races, but rare among Caucasian and other races.

Reported incidences in representative ethnic infants are as follows: Mongolian spots are caused by entrapment of melanocytes in the dermis during their migration from the neural crest mancha mongolica the epidermis in fetal development. Microscopically dermal melanocytoses are seen in all newborn mancha mongolica irrespective of race.

File:Giant mongolian blue - Wikimedia Commons

Differences in the number of dermal melanocytes may cause the racial variation. The bluish discolorations usually fade after a mancha mongolica years and almost disappear between age 7 to 13 years. Therefore, no treatment is required in most cases.

Blue nevi, nevi of Ota, and bruises should mancha mongolica differentiated. Occasionally, Mongolian spots are mistaken for bruises caused by child abuse.