Schilling announced the news Wednesday on social media. He thanked his Boston-based medical team.
He announced his diagnosis in February, saying he planned to “embrace this fight, just like the rest of them, with resolute faith, and head on.”
He hadn’t indicated the type of cancer or his prognosis, but has posted pictures of himself undergoing treatments.
Schilling starred in World Series for the Arizona Diamondbacks and the Red Sox. He later launched a video game company, 38 Studios, whose collapse is the subject of a lawsuit in Rhode Island after it got a $75 million state-guaranteed loan.
Schilling has said he lost as much as $50 million in 38 Studios.
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