Former Black Sabbath drummer Bill Ward recently underwent surgery on his colon. He is expected to make a full recovery.

In a post on his website, Ward revealed that he had been suffering from perforated diverticulitis, where pouches form within the intestines to the point where they pierce the intestinal wall.

Ward had to postpone an appearance at a reception on Oct. 26 at the Annapolis Collection Gallery in Annapolis, Md., where his collection of drum-related artwork, 'Absence of Corners,' has been on display since Sept. 21.

“I am truly sorry that I have to postpone the 'Absence of Corners' gallery reception,” Ward wrote. “The feedback I have received from everyone about this project has been astounding, and I was so looking forward to this event. I want to thank the Annapolis Collection Gallery for everything they are doing. I am honored that they are exhibiting my art, and I hope to get there to celebrate this collection with you all very soon.”

Last summer, Eddie Van Halen also required surgery for diverticulitis, which he believed was caused by a fad diet. His period of recovery forced the postponement of Van Halen's tour of Japan.