The actress wife of Tom Hanks released a statement to People revealing she had the surgery last week and is now recovering with her family by her side.
Rita said: "I underwent a bilateral mastectomy and reconstruction for breast cancer after a diagnosis of invasive lobular carcinoma.
"I am recovering and most importantly, expected to make a full recovery. Why? Because I caught this early, have excellent doctors and because I got a second opinion."
Rita, 58, explained that she sought a second opinion despite a recent surgical breast biopsy showing no cancer present. She said it was her "gut feeling" there was something wrong. A friend who had already battled breast cancer encouraged her to seek that second opinion.
"I share this to educate others that a second opinion is critical to your health. You have nothing to lose if both opinions match up for the good, and everything to gain if something that was missed is found, which does happen. Early diagnosis is key."
The actress explained in her statement that she has an underlying condition called LCIS which had been monitored closely by doctors over the years. According to Macmillan Cancer, it's a condition that means there are changes in the cells lining the lobes where milk is made in the breast. It can mean a woman is at higher risk of developing breast cancer.
A recent surgical breast biopsy done on Rita uncovered PLCIS, a sign of the earliest stage of breast cancer. But a pathology showed no cancer. Still worried, Rita sought a second opinion.
"I am getting better every day and look forward to renewed health," she added.
Rita and Tom have two children.
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