Oliver Cameron was born with a large, non-cancerous tumor, called a cardiac fibroma, inside his heart. It was so rare that only a handful of doctors in the U.K. had ever seen one, and none were able treat it. The tumor caused Oliver’s heart to beat dangerously fast, and his parents often had to rush him to the hospital for emergency treatment.
“They couldn’t treat the tumor in the U.K. because they didn’t have any doctors with the right expertise,” says Oliver's mum, Lydia. “They said our only option was a heart transplant, but we thought there must be another route, so we started doing our own research.”