Author and YouTuber Hank Green reveals cancer diagnosis

Veteran YouTuber and best-selling author Hank Green has announced that he has Hodgkin's lymphoma. 

"It seems likely that we caught mine early. I'm still waiting on a scan to sort of confirm that," Green said in a YouTube video uploaded Friday. In the video description, he wrote his first treatment began "literally as this video goes live."

He recalled how he was diagnosed in a mostly upbeat 13-minute video titled "So I've got cancer," posted to vlogbrothers, the YouTube channel he shares with his brother, novelist John Green.