Brian May has undergone several tests for cancer over the festive period.
The 66-year-old guitarist - who had a knee replacement earlier this year - has taken to his website to reveal he has been suffering from agonising pain in his back over the past few weeks and it turned so bad he was urged to go for MRI scans to make sure he didn't have cancer.
He wrote: "Around Christmas I've been having a succession of blood tests, ultrasounds, and various kinds of scans, to see if they could rule out various kinds of cancer.
"Now, on hearing the "C" word something happens inside you ... of course. I've seen so many of my dear friends fighting it ... and my Dad lost his battle at age 66, exactly the age I am now. So over the last few days I've been in various states of unrest. But the great thing has been that the team my GP assembled to check out the possibilities has moved Heaven and Earth to gather all the information I need quickly over the Christmas period ... not an easy time. (sic)"
The Queen legend has his final test today but admitted he is "cautiously optimistic" the doctors won't find anything cancerous.
