New York, New York - Full House star Dave Coulier has shared another heartbreaking health struggle after he battled stage 3 non-Hodgkin Lymphoma earlier this year.

The 66-year-old appeared on the Today show on Tuesday, where he revealed that he has been diagnosed with tongue cancer.

Coulier, who became a beloved sitcom star through his role as Uncle Joey on Full House, received the diagnosis in October.

"To go through chemotherapy and feel that relief of whoa, it's gone, and then to get a test that says, well, now you've got another kind of cancer... it is a shock to the system," he said.

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Coulier's new diagnosis is unrelated to his non-Hodgkin lymphoma and is an HPV-related oropharyngeal tongue cancer.

The actor had announced in March that he was cancer-free following chemotherapy treatment for the non-Hodgkin lymphoma.

He told the show that he didn't have any symptoms ahead of his latest diagnosis, but doctors discovered it through a PET scan that he received as a follow-up from his initial cancer battle.

Thankfully, Coulier's new cancer has a promising prognosis.

"We found it early enough where it's very treatable," he said, adding that the disease has a "90% curability rate."

Coulier is currently undergoing radiation treatments, which he will continue through the end of the year.