The actortold Peoplehe was diagnosed in October after an upper respiratory infection caused major swelling in his lymph nodes.
His doctor recommended several tests, including bloodwork, EKG, and PET and CT scans.
After doctors completed a biopsy of a lymph node, he received the diagnosis.
Dave CoulierNathan Congleton/NBC via Getty Images
This has been a really fast roller coaster ride of a journey.
We all kind of put our heads together and said, Okay, where are we going?
And they had a very specific plan for how they were going to treat this.
He received better news after a bone marrow test came back negative.
At that point, my chances of curable went from something low to 90% range.
And so that was a great day.
Coulier has begun chemotherapy and said he shaved his head as a peremptive strike.
Wearing a hat, he said I guess I look a little bit like Mr. Woodchuck now.
But it kind of looks military, and its appropriate because this is my own personal battle.
Im not going to try and hide anything.
I would rather talk about it and fire up the discussion and inspire people.
Coulier said he hopes his experience can inspire others to undergo early screening.
Take great care of yourself, because theres a lot to live for, he said.
