Stanley Tucciis revealing details of his struggle with oral cancer after a 2017 diagnosis.

My late wife and I, we traveled all over the world trying to find a cure for her.

So when I got it, I was completely shocked, he told Geist.

Stanley Tucci.

Stanley Tucci.David Levenson/Getty Images.

I was terrified, absolutely terrified.

The treatments he described, were brutal and awful.

I lost 35 pounds, he said.

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Tucci thanked his wife Felicity for her unwavering support.

Still is incredible, he added.