Omphalopagus Conjoined Twins
Of the various types of conjoined twins thoraco omphalopagus is a commonly occurring type.
Omphalopagus conjoined twins. Omphalopagus is the least common variety. The most common form of conjoined twins is fusion of the anterior thorax and or abdomen referred to as thoracopagus omphalopagus and thoraco omphalopagus as in our case which altogether constitutes 70 of conjoined twins. Pongsatha department of obstetrics and gynecology faculty of medicine chiang mai university thailand key words.
In the case of omphalopagus twins they are connected at the abdominal region. Conjoined twins may be joined at any of these sites. They often have a shared heart and may also share one liver and upper intestine.
A recent theory postulates fusion of two embryonic discs as more of a cause for conjoined twinning than fission of a single embryonic plate. Conjoined twins also known as siamese twins are identical twins joined in utero an extremely rare phenomenon the occurrence is estimated to range from 1 in 49 000 births to 1 in 189 000 births with a somewhat higher incidence in southwest asia and africa. Conjoined twins omphalopagus despite the fact that conjoined twinning is the rarest form of monozygotic twins this.
With an incidence of 74 75 thoracopgus is the most common variety with an incidence of 0 5. Thoracopagus thor uh kop uh gus twins are joined face to face at the chest. Although omphalopagus twins have the best chances of survival adequate team management and preoperative planning is required.
Conjoined twins are a rare congenital anomaly of twinning which borders on monstrosity. Lupita and carmen are omphalopagus twins which make up 10 percent of all conjoined twins it means each of the girls has a separate heart a set of arms a set of lungs and a stomach. They are one of the most common types of conjoined twins representing about one third of conjoined twins.
Conjoined twins are classified by the location of their connection. About to leave. Omphalopagus twins are a classification of conjoined twins.
In the earlier weeks the foetal movements are limited and the monochorionic twins may be mistaken for conjoined twins. The largest series reported includes 17 sets of twins by spitz et al. Ultrasonography is the most accurate technique which can be used for its diagnosis.
8 increased nuchal fold thickness has been documented in multiple cases of conjoined twins. Omphalopagus om fuh lop uh gus twins are joined near the. Approximately half are stillborn and an additional one third die within 24 hours most live births are female with a ratio of 3 1.
A coming of age story of two omphalopagus twins. The twins were born conjoined from the chest to the pelvis and were given just three days to live in 2002. The separation of conjoined twins presents a unique challenge to pediatric surgeons because of its rarity.
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