Stephen Sinclair was told he would never be able to play sport again following a major blood clot that almost claimed his life.
But now the 34-year-old from Ashington is set to defy doctors' expectations as he prepares to climb Mount Everest in aid of charity Autism Awareness.
Stephen was just seven years old when he was taken to Newcastle's Royal Victoria Infirmary (RVI) after his left leg began to turn purple and swell up. Doctors said he had a major blood clot from his ankle to his liver that, if left for one more day without medical attention, could have killed him.