Opera singer Russell Watson has completed a five-week course of radiotherapy to eradicate a recurrent brain tumour.
The 41-year-old singer, known as The Voice, described his treatment as "no walk in the park".
Watson's manager Giles Baxendale said: "He's finished his treatment but he doesn't know whether he is in the clear yet."
"He's doing well, he's a little tired, a bit drained, but he's upbeat that it's finished."
Watson will now have to have regular scans to determine whether or not the treatment has been successful.
In a message on his website, Watson said: "I've had my moments under that machine where I just wanted to stop the bloody thing and walk away."
"I'm not out of the woods yet. I dearly wanted to keep the side-effects to a minimum and I've been keeping myself fit and healthy as I can, but I'm afraid they've caught up with me, and I don't mind admitting I've not been myself."
"I'm just so lucky I've had friends, family, and of course my fans to help me through; I really don't think I could do this without the support I've had," the singer wrote.
Watson underwent surgery to remove a brain tumour last October. It was his second operation on the tumour in 12 months.
