Lesh, who fought prostate cancer in 2006, posted the following message to fans via the Terrapin Crossroads' Facebook page,"I am sorry to let you know that I will need to cancel the October 24th and 25th Phil & Friends shows with Chris Robinson.

"I was diagnosed with bladder cancer in early October, and have spent the last few weeks at the Mayo Clinic in Scottsdale doing tests and eventually surgery to remove the tumors. I am very fortunate to have the pathology reports show that the tumors are all non aggressive, and that there is no indication that they have spread.

"So thanks to my local doctor Cliff Sewell, and the incredible team at the Mayo Clinic, all is well and I can return to normal activities in two weeks from my surgery.