Conjoined Twins Fused at the Head Now Separated After More Than 50 Hours of Surgery

Twin girls who were born joined at the head have been successfully separated after a monthslong medical endeavor that required more than 50 hours of major surgery and a team of 100 medical professionals, doctors announced this week.

The 2-year-old twins, Safa and Marwa Ullah, were born with an extremely rare condition called craniopagus, which means they shared a portion of their skull and brain tissue, according to Great Ormond Street Hospital in London (GOSH), the hospital where the separation surgery was performed.

Conjoined twins are very rare to begin with, occurring at a rate of about one in every 2.5 million births worldwide, and of these, only about 5% are craniopagus, the hospital said in a statement.

The twins were brought from their home in Pakistan to GOSH when they were 19 months old. They required three major operations that took place from October 2018 to February 2019, the statement said. The girls' recovery took time, and they were finally well enough to leave the hospital on July 1, according to The New York Times.

Surgeries to separate craniopagus twins are complex and challenging, and they need to be broken down into a series of smaller steps, the hospital said.

For the first several procedures, doctors focus on separating the twins' brains and blood vessels, and then doctors insert a piece of plastic to separate the two brains. Next, during another procedure, the skulls must be separated and the tops of their heads reconstructed with the twins' own bone and skin.

To aid in planning the surgeries, doctors created a replica of the twins' anatomy with virtual reality technology; and they also used 3D-printed plastic models of the twins' brains, skulls and blood vessels to practice the surgery.

"We are delighted we have been able to help Safa and Marwa and their family. It has been a long and complex journey for them, and for the clinical team looking after them," Dr. Noor ul Owase Jeelani, former head of Neurosurgery at GOSH, and Dr. David Dunaway, head of the Craniofacial Unit at GOSH, who together led the girls' surgery, said in a statement.

The hospital has previously separated two other sets of craniopagus twins, in 2006 and 2011.

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Originally published on Live Science.

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