Heart singer Ann Wilson has been diagnosed with cancer. In a heartfelt statement shared via Instagram Tuesday, the “Barracuda” singer, 74, revealed she “recently underwent an operation to remove something” that was cancerous. “The operation was successful & I’m feeling great but my doctors are now advising me to undergo a course of preventative chemotherapy & I’ve decided to do it,” she continued. Wilson …

In a statement Tuesday, the rock legend said that her doctors urged her to undergo preventive chemotherapy and take time off from performing “in order to fully recover.” LOS ANGELES (AP) — Ann Wilson, lead singer of rock band Heart, says she has cancer and the band is postponing the remaining shows on its Royal Flush Tour while she undergoes …