Def Leppard guitarist Vivian Campbell has revealed that his cancer has returned, delivering a heartbreaking update more than a year after undergoing a donor transplant he once described as his “only hope to survive.”

The 63-year-old rock veteran shared the news during an Aug. 12 interview with El Salvador radio station YSKL, admitting the transplant did not produce the lasting result doctors had hoped for.

“Unfortunately, it didn’t stick,” Campbell said. “So the cancer has returned, and I’m continuing treatments to manage it.”

The revelation comes roughly a year and a half after Campbell underwent the transplant in January 2025 following his lengthy battle with Hodgkin lymphoma.

Campbell first announced in 2013 that he had been diagnosed with the blood cancer and was undergoing chemotherapy.

While he has spent years managing the disease, Campbell admitted there was one period when he genuinely feared he might not survive.

“There’s only been one time that I felt it was gonna kill me,” he said, recalling the winter of 2013.

Campbell said his condition was progressing so quickly at the time that he became deeply concerned about what would happen next.

That experience eventually led him to undergo a donor transplant.

“It was my only hope to survive,” he said.

Campbell has not publicly revealed the exact type of transplant he received. Bone marrow and stem cell transplants can be used in some patients battling Hodgkin lymphoma.

Despite the devastating setback, Campbell made it clear he has no intention of walking away from the stage.

The guitarist said performing and touring with Def Leppard has helped keep his mind from becoming consumed by his cancer battle.

“The fact that I could still continue to work, that gives me something to live for,” Campbell explained.

For the veteran rocker, music gives him a reason to get out of bed and something positive to focus on each day.

Campbell even suggested another transplant could eventually be necessary as doctors continue trying to control the disease.

But slowing down does not appear to be part of his plan.

“I’m certainly not slowing down,” he said. “I’m doing as much with my life as possible.”

Campbell said his cancer diagnosis has actually pushed him to embrace life more aggressively, rather than retreat from it.

He has seen other cancer patients become afraid to travel, work or participate in everyday activities after receiving a diagnosis.

Campbell said he has tried to take the opposite approach.

“I’ve always felt like I’m going to continue to live my life as much as possible,” he said. “In fact, even more so after getting a cancer diagnosis.”

Campbell joined Def Leppard in 1992 following the death of guitarist Steve Clark, who died in 1991 at just 30 years old.

He has remained a key member of the legendary British rock band alongside Joe Elliott, Rick Savage, Rick Allen and Phil Collen.

Def Leppard has sold tens of millions of records, been inducted into the Rock and Roll Hall of Fame and received a star on the Hollywood Walk of Fame.

Campbell has also performed with major rock acts including Dio and Whitesnake and is currently working on new music with his band Last in Line.

Even after more than a decade of cancer treatments, Campbell said he considers himself fortunate that doctors discovered the illness when they did. His diagnosis came after he developed a persistent cough.

Now, with the cancer once again requiring treatment, Campbell is focused on controlling the disease while continuing the career that has defined much of his life.

For the rock legend, the fight is far from over — and neither is the music.