Liza Minnelli’s Sis Lorna In New Cancer Heartache

Liza Minnelli

Cancer has once again struck Liza Minnelli’s sister – and friends fear the setback will devastate the struggling “Cabaret” star.

With Liza just out of rehab, The National ENQUIRER can exclusively reveal that her sister Lorna Luft is still not recovered after undergoing treatment for breast cancer in 2013.

“Lorna discovered in March that her cancer has returned,” a close source told The ENQUIRER. “This could be a major blow to Liza’s struggles.” 

Singer Lorna, 62, was first diagnosed with stage 2 breast cancer in 2012.

She opted for a lumpectomy and completed six rounds of preventative chemotherapy in 2013.

The ENQUIRER revealed at the time that friends feared the diagnosis would lead Liza back to alcohol and drugs.

Sadly, they were right to be concerned.

As The ENQUIRER recently reported, a killer combo of booze and prescription pills landed 69-year-old Liza back in rehab.

Her rep, Scott Gorenstein, announced in March that Liza was in treatment, but the singer checked out in April and was spotted dining in L.A.

Meanwhile, as Lorna battled her first bout with cancer, Liza bravely performed at a breast cancer fundraiser with her half-sister, although she’d broken her wrist the day before in a fall.

“Nothing was going to stop me from coming here tonight,” the showbiz icon told the crowd. “Lorna asked me to be here and I wouldn’t let her down.”

Added an insider: “There’s no question Liza will be devastated. Everyone is praying both she and Lorna can make it through this difficult time.”