Just found on my Facebook page:
A number of hard rock and heavy metal musicians have taken to Twitter to offer best wishes to legendary Black Sabbath guitarist Tony Iommi, who announced earlier today that he has been diagnosed with the early stages of lymphoma, a cancer of the lymphocytes, a type of cell that forms part of the immune system.

Iommi, 63, is currently working with his doctors to establish the best treatment plan and remains upbeat and determined to make a full and successful recovery.

This comes as BLACK SABBATH — Ozzy Osbourne (vocals), Tony Iommi (guitar), Geezer Butler (bass) and Bill Ward (drums) — are writing and recording their first album in 33 years in Los Angeles (still set for release this fall) with producer Rick Rubin. They will now go to the U.K. to continue to work with Tony.

Anthrax (band): "This really does suck. GET WELL SOON TONY!"

Slash (VELVET REVOLVER, GUNS N' ROSES): "Best wishes for a full recovery to Tony Iommi."

Robb Rivera (NONPOINT): "Just when i was happy to announce that I had finished his book last night, today I read this sad story about metal."

David Draiman (DISTURBED): "Everyone please send their prayers/good vibes/best wishes to Tony Iommi for a speedy recovery; he has been diagnosed [with] lymphoma."

Sebastian Bach (SKID ROW): "All hail the mighty Tony Iommi. & FUCK YOU, Cancer."

Tommy Clufetos (OZZY OSBOURNE, ROB ZOMBIE, ALICE COOPER): "All my positive vibes to Tony Iommi of [BLACK SABBATH] for a healthy speedy recovery... A true rock legend!!"

Randy Blythe (Lamb of God): "I absolutely insist that every single follower of mine, religious or not, send a prayer up for Tony Iommi. He has been diagnosed with lyphoma. It's in its early stages — SABBATH is writing a new record, and they are continuing to. Iommi is the reason heavy metal exists. Pray for him. You pray to Crom, Odin, yourself — don't care who. Just send up some positive vibes for Tony Iommi. This is terrible news for metal. I've toured with Iommi a coupla times. He is a gentleman and a living legend. Hopefully since it's in early stages they can beat it pretty easily. But Iommi's not a young man, so think good thoughts! It is no secret that I have donated both my time, energy, facial hair, and a fair amount of my money to cancer research. I've walked the walk (literally) as well as talked the talk. However, there's nothing wrong with positive vibes."

Zakk Wylde (Black Label Society, Ozzy Osbourne): "Big BL get well wishes out to Lord Iommi!!!"

Angela Gossow (ARCH ENEMY): "Very, very sad to hear about Tony Iommi's cancer diagnosis. FIGHT! You never know what the future holds for you. Live and love every day!"

EXHORDER: "Get well soon Tony Iommi. Sad news."

Frank Bello (ANTHRAX): "Get well soon Tony!!"

Richie Faulkner (Judas Priest: "My thoughts go out to Tony Iommi and I wish him a fast and full recovery."

Gus G. (OZZY OSBOURNE, FIREWIND): "I'm in shock to hear the news about Tony Iommi. Get well soon 'Iron Man'!! Your biggest fan."

Michael Amott (Arch Enemy Carcass - Symphonies of Sickness): "Here's hoping for a solid and speedy recovery for my guitar hero Tony Iommi!"

Niji Entertainment Group (the record label Wendy Dio and her late husband Ronnie James Dio formed before his untimely passing): "Our thoughts, love and prayers are with Tony Iommi and his family! Please say a prayer!"

My thoughts are with him, it's a tough ride, personally knowing people with any form of cancer.