ABC News December 19, 2014

Conjoined Twin Babies Undergo First Step Toward Separation

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Elysse Mata leaned over her 8-month-old conjoined twins, kissing their faces as tears streamed down her face and she whispered "I love you."

The babies were about to undergo a skin-stretching surgery, the first step in their eventual separation at Texas Children's Hospital in Houston. They share a chest wall, diaphragm, intestines, lungs, lining of the heart and pelvis.

PHOTO: Mata Twins Born in April 2014 Texas Conjoined Twins Await Surgery to Lead Separate Lives

Five hours later, it was over.

Allen Kramer/Texas Children's Hospital
Staff prepares tissue expanders for Mata twins.

In recovery, the Mata family leaned over groggy Knatalye and Adeline, smoothing their hair back and kissing them in the recovery room.

"We are so thankful for the support and thoughts and prayers for our girls as they continue to grow, recover and prepare for the next step in their journey," Mata said in a statement.

The twins will spend the next six to eight weeks recovering as a team of surgeons spanning six departments plans their separation, which is expected to take place early next year.

Allen Kramer/Texas Children's Hospital
Dr. Cass shares post-surgery details with the Mata Family.