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Rachel V Thomas

Amanda Peet Opens Up About Breast Cancer Battle, Shares Toughest Moment

Amanda Peet, the Hollywood actress known for roles in Something’s Gotta Give, The Whole Nine Yards, and Jack &amp; Jill, recently opened up about her <a href="https://www.healthandme.com/health/breast-cancer">breast cancer</a> diagnosis and how informing her kids about her health became the toughest part for her.

In a New Yorker essay published March 21, the 54-year-old actress announced how a routine scan in August 2025 showed an unusual ultrasound result. Later, a biopsy detected a tumor that “appeared” small. 

The Dirty John star found to be in stage 1 of lobular cancer that is “hormone-receptor-positive” and “HER2-negative,” making her “happier than the pre-diagnosis” stage.

It is because Hormone-receptor-positive and HER2-negative cancer is less aggressive and often easier to treat than more aggressive forms of breast cancer. 

However, informing her children, Frances, 19, Molly, 15, and Henry, 11, about the cancer was the toughest part for her, and she had to be in the right mindset before sharing the news with them.

“They've been great,” Peet told E! News.

“I definitely had to get myself together before including them. The hard part was realizing that nothing is certain and there was going to be no perfect time to tell them,” she added.

Peet stated that between her diagnosis, she had also been navigating a series of family health crises — with both of her parents' final months in hospice care.

The Your Friends &amp; Neighbors actress, in her essay, also noted that she would “only need a lumpectomy and radiation,” not a double mastectomy.

Also read: <a href="https://www.healthandme.com/health-wellness/jane-fallon-diagnosed-with-breast-cancer-this-is-how-she-caught-it-early-article-153825390" data-type="tilCustomLink">Jane Fallon Diagnosed With Breast Cancer, This Is How She Caught It Early</a> <h2></h2>

Invasive Lobular Carcinoma (ILC) the second most common form of breast cancer, representing 5 to 15 percent of breast cancer cases.

Rather than a distinct lump, it can appear as a thickening or "fullness" rather than a tumor. 

It is often difficult to detect on mammograms, thus MRI or ultrasound are more effective for detection 

Also read: <a href="https://www.healthandme.com/health-wellness/olivia-munns-mom-diagnosed-with-breast-cancer-after-actor-urges-her-to-take-risk-test-what-should-you-do-if-it-runs-in-your-family-article-152258634" data-type="tilCustomLink">Olivia Munn’s Mom Diagnosed With Breast Cancer After Actor Urges Her To Take Risk Test; What Should You Do If Cancer Runs In Your Family?</a>

<h2>What Is Hormone receptor-positive (HR+) and HER2-negative (HER2−) Breast Cancer </h2>

HR+ and HER2− breast cancer is the most common subtype and is seen among 60–75 per cent of cases.

It is not two different cancers, but rather specific, defining characteristics of the same cancer type (breast cancer). It grows:<ul><li>due to hormones estrogen/progesterone, </li><li>lacks excess HER2 protein, </li><li>it can occur in either or both breasts </li><li>has a better prognosis </li><li>slower growth rate </li><li>often treated with hormone therapy and sometimes chemotherapy.</li></ul>

<h2>Why Early Diagnosis Matters for Breast Cancer </h2>

According to the Centers for Disease Control and Prevention (CDC), breast cancer screening is a proactive checkup used to find cancer before any physical signs or symptoms appear. While screening doesn’t prevent cancer, its goal is early detection, making the disease much easier to treat.

Since every person’s body and history are different, you and your doctor should engage in informed and shared decision-making. This means discussing the pros and cons to decide together if, and when, screening is right for you. 

The US Preventive Services Task Force (a group of national medical experts) provides guidelines based on the latest research:

Average Risk

Women aged 40 to 74 should generally get a mammogram every two years. 

High Risk

If you have a family history or other risk factors, your doctor may recommend a different schedule or additional tests.

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Amanda Peet, the Hollywood actress known for roles in Something’s Gotta Give, The Whole Nine Yards, and Jack & Jill, recently opened up about her breast cancer diagnosis and how informing her kids about her health became the toughest part for her.  In a New Yorker essay published March 21, the 54-year-old actress announced how a routine scan in August 2025 showed an unusual ultrasound result. Later, a biopsy detected a tumor that “appeared” small.  The Dirty John star found to be in stage 1 of lobular cancer that is “hormone-receptor-positive” and “HER2-negative,” making her “happier than the pre-diagnosis” stage.  It is because Hormone-receptor-positive and HER2-negative cancer is less aggressive and often easier to treat than more aggressive forms of breast cancer.  However, informing her children, Frances, 19, Molly, 15, and Henry, 11, about the cancer was the toughest part for her, and she had to be in the right mindset before sharing the news with them. “They've been great,” Peet told E! News. “I definitely had to get myself together before including them. The hard part was realizing that nothing is certain and there was going to be no perfect time to tell them,” she added. Peet stated that between her diagnosis, she had also been navigating a series of family health crises — with both of her parents' final months in hospice care. The Your Friends & Neighbors actress, in her essay, also noted that she would “only need a lumpectomy and radiation,” not a double mastectomy.Also read: Jane Fallon Diagnosed With Breast Cancer, This Is How She Caught It Early What is Lobular Cancer?Invasive Lobular Carcinoma (ILC) the second most common form of breast cancer, representing 5 to 15 percent of breast cancer cases.Rather than a distinct lump, it can appear as a thickening or "fullness" rather than a tumor. It is often difficult to detect on mammograms, thus MRI or ultrasound are more effective for detection It is usually hormone receptor-positive.Also read: Olivia Munn’s Mom Diagnosed With Breast Cancer After Actor Urges Her To Take Risk Test; What Should You Do If Cancer Runs In Your Family?What Is Hormone receptor-positive (HR+) and HER2-negative (HER2−) Breast Cancer  HR+ and HER2− breast cancer is the most common subtype and is seen among 60–75 per cent of cases. It is not two different cancers, but rather specific, defining characteristics of the same cancer type (breast cancer). It grows:due to hormones estrogen/progesterone, lacks excess HER2 protein, it can occur in either or both breasts has a better prognosis slower growth rate often treated with hormone therapy and sometimes chemotherapy.Why Early Diagnosis Matters for Breast Cancer  According to the Centers for Disease Control and Prevention (CDC), breast cancer screening is a proactive checkup used to find cancer before any physical signs or symptoms appear. While screening doesn’t prevent cancer, its goal is early detection, making the disease much easier to treat.  Since every person’s body and history are different, you and your doctor should engage in informed and shared decision-making. This means discussing the pros and cons to decide together if, and when, screening is right for you.  The US Preventive Services Task Force (a group of national medical experts) provides guidelines based on the latest research:Average Risk  Women aged 40 to 74 should generally get a mammogram every two years.  High Risk If you have a family history or other risk factors, your doctor may recommend a different schedule or additional tests.

amanda peet opens up about breast cancer battle, shares toughest moment

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