Olivia Munn, 43, has breast cancer, underwent double mastectomy

Olivia Munn has announced that she quietly had a double mastectomy amid a breast cancer battle. 

On Wednesday, March 13, the actress, 43, posted a photo of herself in a hospital bed on Instagram. “I was diagnosed with breast cancer,” she wrote in the caption. 

“I hope by sharing this it will help others find comfort, inspiration and support on their own journey.”

In another slide in her photos, the “X-Men: Apocalypse” actress, who had a son, Malcolm, with comedian John Mulaney, 41, in 2021, continued with text explaining her circumstances.

Munn wrote: “In February of 2023, in an effort to be proactive about my health, I took a genetic test that checks you for 90 different cancer genes.” 

The test seemed clean at first, she said, but “two months later, I was diagnosed with breast cancer.” 

Munn, who attended the Oscars with Mulaney on Sunday, March 10, further described her ordeal.

“In the past ten months, I have had four surgeries, so many days spent in bed I can’t even count …surprisingly, I’ve only cried twice … I’ve tended to let people see me when I have energy, when I can get dressed and get out of the house, when I can take my baby boy to the park. I’ve kept the diagnosis and the worry and the recovery and the pain medicine and the paper gowns private. I needed to catch my breath and get through some of the hardest parts before sharing.”

Munn went on to specify that she has “Luminal B,” which she called an “aggressive, fast moving cancer.” 

She had a double mastectomy, she shared. 

“The Daily Show With Jon Stewart” alum went on to thank Mulaney, whose ex-wife, Anna Marie Tendler, recently announced a memoir that’s likely to feature the comedian, as Tendler said it’s about “the endless source of my heartbreak and rage — men.” 

“I’m so thankful to my friends and family for loving me through this,” Munn wrote.

“I’m so thankful to John for the nights he spent researching what every operation and medication meant, and what side effects and recovery I could expect. For being there when I went into each surgery and being there when I woke up, always placing framed photos of our little boy Malcolm so that it would be the first thing I saw when I opened my eyes.” 

In a comment on Munn’s post, Mulaney wrote, “Thank you for fighting so hard to be here for us. Malc and I adore you,” and added a heart emoji.

The Post reached out to Munn for comment.