Sheryl Crow has cancer surgery, postpones tour

Grammy winner Sheryl Crow had surgery for breast cancer and postponed a North American tour scheduled to start next month, the singer announced on her Website on Friday.

Crow's Website said she underwent successful surgery on Wednesday and described the procedure as "minimally invasive." Doctors said her prognosis was excellent and she would have radiation treatments as a precaution.

"I am joining more than 200,000 women who will be diagnosed with breast cancer this year," Crow said. "We are a testament to the importance of early detection and new treatments ... I am inspired by the brave women who have faced this battle before me and grateful for the support of family and friends."

Last month, Crow, 44, and Lance Armstrong, seven-time winner of the Tour de France cycling race and a survivor of testicular, brain and lung cancer, announced they were scrapping plans to get married after a two-year relationship.

Crow is calling off her March-April tour but intends to reschedule as much of it as possible.