AceShowbiz - Musician Mark Hoppus will find out this week whether he will "live or die" after his cancer diagnosis.

The Blink-182 rocker is fighting cancer with chemotherapy and bone marrow transplants, but does not yet know if his treatment have been effective.

"Apologies if I'm oversharing," he said in a series of tweets on Saturday (10Jul21), "but it's so surreal to think that this week I'll take a test that may very well determine if I live or die."

"Thanks to everyone for the positive thoughts and encouragement. I read all your replies and it means the world to me. Thank you. I'm going to beat this through chemotherapy or through bone marrow transplants, but either way I'm determined to kick cancer's a** directly in the nuts. Love to you all."

Mark gave a health update at the end of June, revealing that chemo left him feeling like a "poisoned electrified zombie" most days, but that his last round of treatment was not as brutal.

Speaking to fans on Twitch, he said, "How am I feeling today? I feel much better than yesterday. Yesterday was hellish for me and I woke up today feeling better. I went for a walk, and I had a decent breakfast, and I haven't felt like I was going to throw up today, so we'll take it as a win."

"On good days, I go do stuff. I went on a walk outside today and it was the first time I'd left my house in like... five days pretty much. But his round of chemo I wasn't totally stuck on the couch, miserable. I've actually watched movies and walked around and cleaned the house and hung out with my dogs."

Mark has been staying at home and not seeing friends while his blood count is abnormally low, a common side effect of cancer treatment, which means he is more at risk of infection.

The musician also shared a scan of his tumour, which is apparently in his shoulder, though he has not yet confirmed what type of cancer he has.