Olivia Newton-John Reveals New Cancer Diagnosis After Over 20 Years in Remission

'Olivia ... is confident she will be back later in the year, better than ever, to celebrate her shows,' read a statement released on her behalf.

Grease star Olivia Newton-John's breast cancer has returned, leading her to postpone her upcoming concert dates while she fights the disease again.

Read: Mom Who Battled Breast Cancer Twice Graduates College With Her Daughter

"I decided on my direction of therapies after consultation with my doctors and natural therapists and the medical team at my Olivia Newton-John Cancer Wellness and Research Centre in Melbourne, Australia,” she said in a statement Tuesday.

The 68-year-old star had previously announced that she was postponing several concert dates due to back pain, which turned out to be due to breast cancer that had spread.

A statement released on the singer’s behalf says she will undergo "natural wellness therapies” and “a short course of photon radiation therapy."

Read: Woman, 28, With Terminal Cancer Marries Longtime Boyfriend While in Hospice Care

The beloved singer is a breast cancer survivor. She had been in remission for more than 20 years.

Cancer has plagued the entertainer's family. She was originally diagnosed with breast cancer in 1992 -- the same week her father died of cancer. In 2013, her older sister, Rona, died after battling aggressive brain cancer for only six weeks.

The beloved star faced additional heartache over the years.

In 2005, her boyfriend, Patrick McDermott, disappeared during an overnight fishing trip off the coast of California. He's believed to be dead but details about his disappearance remain a mystery.

"Olivia... is confident she will be back later in the year, better than ever, to celebrate her shows," the statement added.

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