Conjoined twins Veena & Vani to undergo a series of surgeries for separation

A new ray of hope shines on conjoined twins Veena and Vani, after being disappointed by many doctors who couldn t deliver on the promise of separating them. The Hindu, reported that, now, surgeons from the Great Ormond Street Hospital, London have given 80 per cent chance for a successful surgery to separate them enable the twins to live normally. (Read: Conjoined twins sharing liver successfully separated)

On Saturday the surgeons at the hospital in the UK reviewed the twins condition and interacted with their parents. The surgeons informed that there is a good chance of a successful and safe surgery, albeit the whole process is complex, they have successfully handled similar cases previously. (Read: Tanzanian conjoined twins separated at Chennai hospital )

The complex surgery will be broken down into five stages which will be less complex to perform as it would be risky to perform the surgery all at once as it might lead to blood loss and brain swelling. The doctors have previously handled a similar cases of one-year-old conjoined twins from Sudan and are will be preparing more for the surgery by preparing 3D models of the brains and vascular system to study sharing of blood between the two.

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What exactly are conjoined twins?

The term conjoined twins refer to individuals born with some shared organs. It s a rare phenomenon that occurs once in every 50,000 births and usually, their survival rate is very low. For reasons still now known, female conjoined twins have a higher survival rate. Females are thrice as likely to males to be born alive. There are two different theories that explain the reason for this phenomenon. One is the fission theory that believes that the fertilized egg splits partially leading to conjoined twins. The other theory is fusion which believes that the fertilized egg completely separates but the stem cells find similar stem cells and fuse them together.

How are conjoined twins different from other twins?

There are basically two kinds of twins fraternal and identical. Fraternal twins develop from two eggs, each fertilised by separate sperm cells while identical twins develop from one zygote that splits and forms two embryos. Conjoined twins are of the second variety which is why they are genetically identical and always of the same sex. They developed from the same fertilised egg like identical twins but for some reason the splitting process stops before it s complete. These partially separated eggs develop into a conjoined foetus.

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