Dustin Diamond’s cancer has been identified as stage four small cell carcinoma

TMZ also reports that in Dustin’s case, the cancer started elsewhere in his body and spread to his lungs.

Dustin’s team have confirmed the actor – who played as Samuel 'Screech' Powers in the hit sitcom – has now completed his first round of chemotherapy, and have said he will be undergoing physical therapy soon.

They also insisted he is keeping a positive outlook and is looking forward to spending more time with his girlfriend, after he was hospitalised last week.

Meanwhile, it was recently reported the 44-year-old star was “going through a lot of pain” amid his health battle.

A source said: “It’s not good, it’s not good at all. He’s going to be in the hospital for a while. He’s getting through his treatments now. It’s tough, it’s very hard. He’s going through a lot of pain, but he still keeps his spirits up. Right now, he’s just suffering. He has his ups and downs where he’s great one minute, but then he can be in a lot of pain - tears. It’s such an emotional time.”

Dustin’s hospitalisation was reported on January 12, and just says later, a representative for the actor confirmed the news.

His rep said: “At this time we can confirm that Dustin does have cancer. Dustin will disclose more information once it is available and a plan moving forward is made.

"We ask everyone to respect Dustin’s privacy during this difficult time. All positivity and prayers are appreciated.”