Ollie, now eight, had been on a camping trip three years ago with his family when his health suddenly declined.
His parents - Anna and Andrew - initially thought he may have been bitten by a bug on their trip, with the young boy developing a fever after getting an infected toe the week prior to the trip.
The family headed home the next morning to take Ollie to the doctor and he was immediately sent to the Children's Hospital.
'I looked over at Ollie and noticed he was extremely pale, and his lips were the same color as his face,' his mom Anna, explained to the Starlight Foundation.
Mom discovers her five-year-old son has cancer after going to the doctors over a 'bug bite' A mom has shared the terrifying moment she found out her five-year-old son had leukemia after thinking he had been bitten by a bug.
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