Cancer is back for boy whose father got tattoo matching head scar

There is some bad news for an 8-year-old boy whose story went viral when his dad got a matching tattoo of his scar from surgery to remove a brain tumor.

KWCH reported that his brain cancer has returned.

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Six months after Gabe Marshall and his father, Josh Marshall, went viral in June, the family has been told by doctors that his tumor is inoperable.

"The tumor is in the center of the brain, around the thalamus, and it has some arteries that are going to it," Marshall said in a video update posted to Facebook Monday. "Surgery would be extremely dangerous and life-threatening."

"Right now we're just asking everyone to please pray for Gabe and our family," he said. "We're trying to keep our faith as strong as possible."

Related: Dad's tattoo of son's cancer scar earns praise across the internet

Marshall also posted the update in a Facebook group called "Prayers For Gabe Marshall."

"It's a roller coaster," Josh Marshall told KWCH. "You go from feeling perfectly fine and normal, and then just the fears of what's going to happen. The not knowing is what really hurts."

Marshall is trying to keep things in perspective because of his son.

"He is my superhero," Marshall said. "He has (shown) me what life really is about and how to cherish the most out of everything."

In March, Gabe's dad set up a GoFundMe page to help with medical and financial needs. It has raised over $9,000 of its $15,000 goal.