Initially, Georgia Leslie thought the painful red lump on her ribcage was caused by a fall at the ice rink.
But a year later, after the lump had grown to the size of a orange, the 15-year-old was given the devastating news that she had bone cancer.
Georgia, now 18, said: "I was leaning on a table when I realised my right side felt a bit uncomfortable and when I looked to see why, I saw the tiniest little bump.