Grateful Dead legend Phil Lesh undergoing treatment for bladder cancer

SAN RAFAEL, Calif., Oct. 17 (UPI) -- Grateful Dead alum Phil Lesh announced via Facebook he has been undergoing treatment for bladder cancer.

The 75-year-old musician had been slated to perform Phil & Friends shows with Chris Robinson Oct. 24-25, but his health crisis forced him to cancel the dates.

"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," Lesh wrote in Friday's message posted on the Facebook page of Terrapin Crossroads, his restaurant and club.

"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. Unfortunately, that means I will have to cancel the PLF shows scheduled for Oct 24/25. We will reschedule these shows as soon as we can, but in the meantime, keep a lookout for a free Grate Room show before I leave for the East Coast shows. I also plan to pop in and jam in the bar before we leave, so I hope to see you there at Terrapin. Love Will See You Through."