Full House star Dave Coulier revealed he's been diagnosed with tongue cancer, less than a year after treatment was successful against his non-Hodgkin lymphoma. Coulier, 66, shared his health update during an interview on Dec. 2 on Today, calling the news a "shock to the system.""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, before explaining that he was diagnosed with HPV-related oropharyngeal tongue cancer in October.