The actress opens up about her then-husband's reaction to her decision to undergo a preventative double mastectomy.

Sharon Stone is speaking out about a deeply personal and painful chapter in her life, revealing the exact moment she realized her marriage was over. During a recent appearance on the "Person Who Believed in Me" podcast, the 68-year-old "Basic Instinct" star detailed how a severe breast cancer scare and her then-husband's lack of support led to the end of their relationship in the early 2000s .

In the podcast interview, Stone recounted the fear she felt when doctors discovered multiple tumors in her breasts. One mass was so large that it was reportedly bigger than her entire left breast . The situation was so serious that her doctor made a house call to deliver the news and recommend immediate action.

"The doctor had come out to my house and said, 'Look, we think you should have a bilateral mastectomy. This is really bad,'" Stone explained . She recalled that based on the size and position of the tumors, the medical team suspected cancer before even performing a biopsy.

Despite the doctor's warnings, Stone believed the tumors were benign. However, she was not willing to take any risks with her health. "I said, 'I don't have cancer,'" Stone remembered. "And [the doctor] said, 'You don't get to decide that.' And I said, 'I do. I do get to decide that. I'm deciding.'" .

The actress made the courageous and definitive choice to undergo a double mastectomy as a preventative measure. It was then, at what should have been a moment of crisis and unity, that her marriage began to unravel.

She told the podcast host that her husband at the time reacted with anger and disdain. "My husband said, 'This is ridiculous.' And got up and left the room," Stone disclosed . When the host asked which part her husband found ridiculous—the surgery or the cancer—Stone clarified that he was "furious" solely about the idea of removing her breasts, rather than the potential threat of cancer .

The actress did not name her ex-husband directly in the podcast. However, she was married to journalist Phil Bronstein from 1998 to 2004. The couple, who divorced shortly after this period, had adopted their son Roan in 2000. Stone was previously married to Michael Greenburg from 1984 to 1990 and later adopted two more sons, Laird and Quinn .

Stone recalled that her doctor stepped in to defend her decision, telling her husband, "If I had more patients like her, we'd have more women alive today. You need to sit down." The actress then firmly asserted her autonomy, stating, "I make the decisions, not you" .

This powerful moment became the final straw for Stone. "That was the end of the marriage. That was it. He was done with me then. It was over," she stated . She described the feeling of finality as immediate and undeniable. "It was just over in the room. You could just tell. It was over. It was just over," she added, explaining that he believed her actions were "ridiculous" and that she was "making too many decisions" on her own .

Ultimately, Stone's instinct was correct. Following a biopsy and surgery, the tumors were found to be benign, and she did not have to undergo the full double mastectomy . Her health was preserved, but the ordeal had irreparably damaged her relationship.

This candid revelation is just one of the many personal trials Stone has faced in the public eye. In addition to her health scare and subsequent divorce, she has also spoken out about other challenges, including a memoir detailing a lack of consent regarding a plastic surgeon's decisions during her recovery from the tumor removal . The star was most recently seen in the action film "Nobody 2."