胎中胎医学资料（Medical records of fetal middle birth）.docVIP

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胎中胎医学资料（Medical records of fetal middle birth）.doc

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胎中胎医学资料（Medical records of fetal middle birth）

胎中胎医学资料（Medical records of fetal middle birth） Summary In the course of development, identical twins develop abnormally, and one of them is abnormal parasitic in another fetus. It is a special conjoined twins, which is rarely seen in clinic. Geneticists believe that parasitic fetuses are caused by missing twins. In laymans terms, this is a twin fetus in the mother of the formation of a parasitic fetal phenomenon. Medical discovery Medical records account for less than 100 cases of fetal birth. The birth of the fetus usually occurs during the early stages of the twins formation. One fetus enters another fetus and continues to live in a parasitic manner. Usually, two fetuses die before birth. But sometimes the host fetus can survive and be born. Causes Geneticists believe that parasitic fetuses are caused by missing twins. In laymans terms, this is a twin fetus in the mother of the formation of a parasitic fetal phenomenon. Twins are divided into two types: true twin and false twin. Any parent that discharges two eggs at one time and develops into two fetuses after fertilization is called true twins; the development of two foetuses by an egg cell is also called twinning. The common parasitic fetus occurs in the true twin embryo, which is divided into two clusters by the inner cell population in the embryonic phase, forming two developmental centers. If the cell mass cells two in the same size, and continued to develop into normal twins; if two cells and a small, and small developers may be bad, wrapped in another group of cells in the developing fetus, become the human parasite called packets. Fetus in fetu. Thus, the parasitic fetus and host are twin brothers or sisters. When it comes to the parasitic fetus, genetic experts believe that more than 20% of women will have two or more fetuses after conception, but only one will remain until the 4~5 month of the fetus is two months old. Obstetrics and gynecology doctors are also often encountered such a situation, many wo