Bradley Lowery's family has revealed he has weeks to live
The terminally-ill Sunderland fan received news that his tumours have grown at a rapid rate on Thursday.
The six-year-old has moved people around the world with his battle against a rare cancer called neuroblastoma.
He was sent for a chest X-ray after recording low oxygen levels after his radiotherapy treatment this week.
A statement on Facebook said: "The results were devastating, all of Bradley's tumours have grown really fast.
"The reason his oxygen levels are low is because there isn't much room in his lungs now.
Bradley has now only got weeks to live because of how rapid the cancer is spreading
Bradley Lowery's family
"I was told Bradley has now only got weeks to live because of how rapid the cancer is spreading."
"My heart is broken in two, it is too soon for this to happen, it should never be happening to start with.
"My baby has had to put up with so much over the past 4 years and now he has to suffer a painful death.
Premier League clubs wish Bradley Lowery a happy birthday Wed, May 17, 2017
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Premier League clubs and famous faces from football send their support to Bradley Lowery as the Sunderland fan spends his sixth birthday in hospital
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"How is that fair??? Why should any parent have to be put through this heart ache???"
The Sunderland fan also walked out with Defoe for his England comeback at Wembley.