Three weeks after cancelling all of her scheduled performances for the month of May (including one in Battle Creek on May 10), Olivia Newton-John took to Facebook Tuesday to announce that she's been diagnosed with breast cancer.

This is not her first bout with the disease. The Huffington Post reports that Newton-John was previously diagnosed with breast cancer in 1992, when she underwent a partial mastectomy, chemotherapy, and a breast reconstruction.

She had previously postponed several of her shows due to back pain. That pain, it turns out, was actually the cancer, which has metastasized to the sacrum.

Read her full statement below: