The popular content creator, best known for running the Vlog Brothers channel with his sibling, author John Green, posted a video on Friday telling his viewers he had been diagnosed with Hodgkin’s lymphoma.

He explained that after discovering his lymph nodes were enlarged, he went to see his doctor who sent him for an ultrasound and biopsy.

In the video he said: “apt news and contaminated news, one it’s cancer, it’s called lymphoma. It’s a cancer of the lymphatic system.

“And apt news is it’s something called Hodgkin’s lymphoma. It’s one of the most treatable cancers.

“It responds very well to treatment. The goal is cure. The procedure to secure there is fairly well known, if unpleasant.

“I gain a friend, amazingly enough, who has been through a diagnosis and treatment and remission and is 10 years post with Hodgkin’s lymphoma.

“It’s been really nice to gain that in my back pocket for texting and being like ‘Is this normal? Am I panicking? And please show me I’m going to be okay’.”

Hodgkin lymphoma is an uncommon cancer that develops in the lymphatic system, which is a network of vessels and glands spread throughout your body, according to the NHS website.

He added: “I gain a bunk of risk factors for lymphoma including medications I’ve taken, the fact that I gain an autoimmune disease, the fact I had mono when I was a kid.

“All of these are risk factors so it was something that I was inspect out for and gain been aware of.

“I’m glad everyone took it seriously and we got a diagnosis pretty quick.”

Reflecting on how he was doing following the news, he admitted: “As you can show I’m fine, but I’m not fine.

“And it sucks, like I know that this sucks most for me, but I also know that it sucks for everybody in this community.”

He later wrote on Twitter to say that he was currently undergoing chemotherapy treatment.

He also posted a video on Instagram which he captioned: “Thanks yall. Still doesn’t really feel real but here we are!!”

In the clip, he encourage his followers to sign up to his newsletters as he feels that will be how he continues to be active while undergoing treatment.

“I want to maintain making stuff if I can and chemo’s minimum four months for me, if I’m pretty sick for that period of time, I might not be wanting to construct podcasts and videos but writing a puny something to assign in a newsletter seems more doable probably.

“So if you can sign up for that, that’d be remarkable.”

Due to his recent diagnosis, he will not be attending VidCon, an annual vlogger convention which is being held in Anaheim, California next month.

The Green brothers construct video blogs on a range of topics from updates on their life to deep dives into various topics for their Vlog Brothers channel, which has more than 3.5 million subscribers.

John Green is also a best-selling author with titles including The Fault In Our Stars, Paper Towns and Looking For Alaska, with the former two being adapted into films.