DEF LEPPARD guitarist Vivian Campbell will receive a stem-cell transplant in September after doctors discovered his cancer had returned.

Campbell — who before joining DEF LEPPARD in 1992 was well known for his work with DIO and WHITESNAKE — went public with his Hodgkin's lymphoma diagnosis last summer, but announced in November that he was in remission.

However, Campbell has now revealed is still battling the disease with a new high-tech chemo treatment.

In a new interview with Utah's Daily Herald, he said: "The remission was a little bit premature. It came right back. I don't know if the cancer came back or it never totally went away, you know, but the initial scan I did last fall after doing my chemo, the scan came back clean. But there was something about it the oncologist was unclear about and didn't feel good about, so I was referred to another specialist.