James McAvoy says he ‘nearly died’ after his lungs collapsed following botched biopsy

James McAvoy opened up about a life-threatening health scare that left him hospitalized for several weeks after what he described as a botched medical procedure.

During a recent appearance on Dax Shepard's "Armchair Expert" podcast, the 47-year-old actor recalled how he pushed his body to its limits for his transformation into the Beast in 2019's "Glass" after first recovering from a serious infection and collapsed lungs.

"I'd actually been in hospital and I had a lung puncture because… they saw a shadow in my lung, so they wanted to biopsy it to see if it was cancer, which it wasn't, which was great," McAvoy said.

"But that was botched, and I nearly died," he continued.

"I was at home two days later and my lungs just collapsed in bed one night, and I was on my own as well, so it was crazy." SHARON STONE CLAIMS EX-HUSBAND SIGNED HER UP FOR BRAIN SURGERY WITHOUT HER CONSENT AFTER STROKE The "X-Men: First Class" star said he spent two or three weeks in the hospital while doctors worked unsuccessfully to clear his lungs.

"They tried everything to clean out," McAvoy recalled.

"Nothing was working.

So, they were like, 'We're going to need to cut you open big-style.

Go in with like soapy, like dish soap basically, and just like clean you out, scoop it all out.'" McAvoy recalled that after his medical ordeal , he underwent an intense process for the next four or five months as he bulked up to reprise his role in "Glass." In the M.

Night Shyamalan-directed movie, the actor portrayed Kevin Wendell Crumb, who suffers from severe dissociative identity disorder (DID) with 24 distinct personalities.

MATT DAMON REFUSES TO PUT BODY IN 'DANGEROUS' SITUATIONS FOR HOLLYWOOD ROLES AFTER TURNING 50 McAvoy first played Wendell in 2016's "Split," which was the sequel to 2000's "Unbreakable." In "Split," Wendell's 24th personality "The Beast," who possesses superhuman strength, speed, durability and pain suppression, became the central threat after emerging toward the end of the film.

"Unlike ‘Split,’ I was the Beast, like most of the movie," McAvoy recalled.

"So I was like, 'I'm really going to need to do the real thing.

I'm going to need to go for it.'" 'THE ODYSSEY' STAR MATT DAMON REVEALS BRUTAL SIX-MONTH TRANSFORMATION BEHIND CHRISTOPHER NOLAN FILM "I remember saying to [Shyamalan] like, ‘You’re going to need to get me a trainer,'" he said.