Family face op double.
Eight-year-old Nathan Mullen needs an operation after being born with Eagle Barrett Syndrome, which affects one in 40,000 newborns in the world.
Also known as Prune Belly, the condition leaves sufferers with a range of problems including weak abdominal muscles and major kidney trouble.
His father Vincent, 31, is a perfect match and the transplant is due to go ahead at Newcastle's Royal Victoria Infirmary next month.
His mother Caroline, from Langley Terrace, Jarrow, said: "If another donor can't be found beforehand they are due to go in to surgery on March 22.
"It's terrifying for both of us, because in 1999 we lost our youngest daughter Bethany to sudden infant death syndrome. She was just two months old at the time. It made us so much more aware of how fragile life is."