Black Sabbath guitarist Tony Iommi is to undergo treatment for cancer after being diagnosed with lymphoma. His bandmates - with whom he has recently been reunited to record a new album - have asked for fans to send 'positive vibes' to the 63-year-old musician. The hard rock pioneers recently reformed with their original line-up to work on their first album together for 33 years. A statement released on behalf of the band said: 'Iommi is currently working with his doctors to establish the best treatment plan -the Iron Man of rock & roll remains upbeat and determined to make a full and successful recovery.' The group, widely credited with creating heavy metal, insist they will plough on with plans for the new album. Black Sabbath had also lined up a series of major dates during the year. Iommi and colleagues Ozzy Osbourne, bass player Geezer Butler and drummer Bill Ward announced last year that they were together again once more. They had been writing and recording in Los Angeles with producer Rick Rubin on an album due for release in the autumn.