Twins

[hairless17]

They are not real twins

[أم بدر الدين]

Sorry but they are...

[أم بدر الدين]

المشاركة الأصلية كتبت بواسطة Batoul29

My sisters are twins
but it's easy to make a difference between them

My daughters are **Dizygotic twins** and it is too difficult to make a difference

[أم بدر الدين]

Zygosity, chorionicity and amniocity

The two types of twins discussed before, monozygotic and dizygotic, are generally referred to as zygocity. Zygocity reflects the genetic type of twins. Two others terms define twin types: chorionity and amniocity. Chorionity refers to the number of chorionic sacs, while amniocity refers to the number of amniotic sacs. The number of chorionic and amnionic sacs can sometimes reveal the zygocity. Monoamniotic twins indicate monozygotic twins. However, two placentas does not provide information about zygocity since monozygotic twins can have two placentas. Chorionicity and amniocity are a result of the division time. Dichorionic twins divide within the first 4 days. Monoamnionic twins divide after the first week.

Complications of twin pregnancy

[ Vanishing twins
Main article: Vanishing twin
Researchers suspect that as many as 1 in 8 pregnancies start out as multiples, but only a single fetus is brought to full term, because the other has died very early in the pregnancy and not been detected or recorded.[22] Early obstetric ultrasonography exams sometimes reveal an "extra" fetus, which fails to develop and instead disintegrates and vanishes. This is known as vanishing twin syndrome.

[SIZE="5"]Conjoined twins
Main article: Conjoined twin
Conjoined twins (or "Siamese twins") are monozygotic twins whose bodies are joined together at birth. This occurs where the single zygote of MZ twins fails to separate completely, and the zygote starts to split after day 13 following fertilization. This condition occurs in about 1 in 50,000 human pregnancies. Most conjoined twins are now evaluated for surgery to attempt to separate them into separate functional bodies. The degree of difficulty rises if a vital organ or structure is shared between twins, such as brain, heart or liver.[/SIZE]



Chimerism===

A chimera is an ordinary person or animal except that some of their parts actually came from their twin or from the mother. A chimera may arise either from monozygotic twin fetuses (where it would be impossible to detect), or from dizygotic fetuses, which can be identified by chromosomal comparisons from various parts of the body. The number of cells derived from each fetus can vary from one part of the body to another, and often leads to characteristic [[mosaicism]] skin colouration in human chimeras. A chimera may be a [[hermaphrodite]], composed of cells from a male twin and a female twin.

Parasitic twins===


Sometimes one twin fetus will fail to develop completely and continue to cause problems for its surviving twin. One fetus acts as a [[parasite]] towards the other.
Sometimes the parasitic twin becomes an almost indistinguishable part of the other, and sometimes this needs to be medically dealt with.


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[hairless17]

Always special
I have nothing to say

[أم بدر الدين]

And i have nothing to add but thanx

[hairless17]

Can you tell us about surgery to separate twins

[أم بدر الدين]

CLEVELAND - Three-year-old twins Tatiana and Anastasia Dogaru are joined at the head, so they have never seen each other’s face directly.

Surgeons who hope to change that began a series of risky operations on Wednesday aimed at separating the girls. The top of Tatiana’s head is attached to the back of Anastasia’s, and the girls have already beaten the odds by living this long.

The twins, born in Italy to Romanian parents, were under close observation in a pediatric intensive care unit after a full day of surgery, said Janice Guhl, a spokeswoman for University Hospitals’ Rainbow Babies & Children’s Hospital, where the surgeries are being performed.

The hospital didn’t expect to update their condition until Thursday, with a more detailed medical briefing expected Friday.

The entire procedure is expected to take several months. In Wednesday’s operation, surgeons had said they would begin at the girls’ scalps and slowly make a wedge where the twins’ skulls are joined. They planned to remove a rectangular bone flap and reinsert it at the end of the surgery.

The procedure would give neurosurgeons their first real glimpse of the girls’ brains. The medical team practiced the procedure on a model designed from images.

[hairless17]

Thanks a lot
What about the saudi surgeries

[أم بدر الدين]

You are welcome,i will put a topic concerning that

[hairless17]

Thanks sister

[أم بدر الدين]

RIYADH // For the first time since they entered the world almost four months ago, Alsafa and Almarwa are sleeping in separate beds.
The Moroccan twins, born joined at the abdomen and sharing a liver, were successfully separated here on Saturday by a 17-person Saudi medical team at King Abdulaziz Medical City.

It was the 19th twin separation performed under the supervision of Abdullah al Rabeeah, an internationally recognised expert on separating conjoined twins.

The surgeon said the eight-hour operation on the Moroccan girls was one of the shortest he had ever done. The girls, who together weighed a little more than seven kilograms, were also “the smallest in terms of weight” and among the youngest separated by his surgical team.
Not just us,” said her husband, Saeed al Eessi, 34, an indoor plasterer. “All the Islamic world is happy – the Saudi people, the Moroccan people.”

Although not surgically complicated, Dr Rabeeah said, the procedure was complex with regards to the anaesthesia because Almarwa suffers from congenital heart disease and therefore is at high risk of life-threatening developments.



“Obviously, all of us are extremely excited at how things went,” Dr Rabeeah said at a post-op press conference where he and 11 of his team members, all still in their surgical scrubs, looked happy but tired.

“We’re so happy, I cannot express how happy,” said Aziza Ibn al Ameed, 23, the mother of the twins.


Alsafa is moved to her own bed following separation surgery from her conjoined twin, Almarwa. Courtesy King Abdulaziz Medical City

[hairless17]

Always ready
Thanks

[أم بدر الدين]

I am here to be ready;thank you

[hairless17]

You are welcome
Are there such cases in Algeria ?