Conjoined twins with fused brains successfully separated thanks to UK surgeon

Brazilian twins who were joined at the head have been successfully separated with the help of a British neurosurgeon.

Bernardo and Arthur Lima, who were born with fused brains, underwent several operations in Rio de Janeiro, with the direction of Great Ormond Street Hospital paediatric surgeon Noor ul Owase Jeelani.

The three-year-olds had seven surgical procedures, involving more than 27 hours of operating time in the final operation alone, and almost 100 medical staff.

It was one of the most complex separation processes ever completed, according to the charity that funded it and which Mr Jeelani founded in 2018 – Gemini Untwined.

Brazilian twins Bernardo (left) and Arthur Lima who have successfully separated. Picture: Gemini Untwined/PA Wire


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Surgeons in London and Rio spent months trialling techniques using virtual reality projections of the twins based on CT and MRI scans – something Mr Jeelani described as “space-age stuff”.

He said that, for the first time in the world, surgeons in separate countries wore headsets and operated in the same “virtual reality room” together.

Speaking about the VR aspect of the surgery, Mr Jeelani said: “It’s just wonderful, it’s really great to see the anatomy and do the surgery before you actually put the children at any risk.

“You can imagine how reassuring that is for the surgeons.


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Noor ul Owase Jeelani with Bernardo (left) and Arthur, and parents Adriely and Antonia Lima. Picture: Gemini Untwined/PA Wire

“In some ways these operations are considered the hardest of our time, and to do it in virtual reality was just really man-on-Mars stuff.”

He said previously unsuccessful attempts to separate the boys meant their anatomy was complicated by scar tissue, and he was “really apprehensive” about the risky procedure.

Mr Jeelani said he was “absolutely shattered” after the 27-hour operation, where he took only four 15-minute breaks for food and water, but it was “wonderful” to see the family feeling “over the moon” afterwards.


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“There were a lot of tears and hugs,” he said. “It was wonderful to be able to help them on this journey.”

He added that, as with all conjoined twins after separation, the boys’ blood pressures and heart rates were “through the roof” – until they were reunited four days later and touched hands.

Mr Jeelani said they were recovering well.

He added that his charity has fast become a “global repository for knowledge and experience” of separation surgery, and he hopes it will serve as a model for a “global health service” providing expert care in other rare diseases.


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“The idea behind the charity was to create a global health service for super-rare cases to try and improve results for these kids,” he said.

“The model of what we have done, I think, can and should be replicated for other super-rare conditions.”

This was Mr Jeelani’s sixth separation procedure with Gemini Untwined, after previously operating on twins from Pakistan, Sudan, Israel, and Turkey.

Dr Mufarrej said the hospital where he works has been caring for the boys for two-and-a-half years, and their separation would be “life-changing”. As Bernardo and Arthur are almost four years old, they are also the oldest craniopagus twins with a fused brain to have been separated.


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It is estimated 50 such sets of twins are born around the world every year. Of them, it is thought only 15 survive beyond the first 30 days of life.


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