Breast Cancer

Breast cancer is cancer that forms in tissues of the breast, usually the ducts (tubes that carry milk to the nipple) and lobules (glands that make milk). It occurs in both men and women, although male breast cancer is rare.

HER-2 Positive Breast Cancer

Human epidermal growth factor receptor 2 (HER2) is a gene that can play an important role in the development of some types of breast cancer. This gene is also sometimes referred to as Erc-B2 receptor tyrosine kinase 2 (ERBB2). This gene is involved in the production of HER2 proteins, which are present on breast cells as receptors to control the growth, division, and repair of the cells.

Axillary Sampling and Sentinel Node Biopsy Comparison

Treating Breast Cancer Using Antibiotics

Breast Cancer Classification

Surgery for Breast Cancer

Radial Scar Diagnosis and Management

Post-Mastectomy Pain

Breast Cancer Pathophysiology

Axillary Lymph Nodes and Breast Cancer

Breast Cancer Diagnosis

Breast Cancer Awareness

PARP Inhibitors For Hard-To-Treat Cancers

See more featured articles »

Hormone Receptor Positive Breast Cancer

What is Triple Negative Breast Cancer?

Preventing Breast Cancer

Microcalcifications in Breast Cancer

The Importance of Hormone Status in Breast Cancer: A Guide to Hormone Dependent Breast Cancer (HDBC)

What is Breast Reconstruction?

Genetics of Breast Cancer

Types of Breast Cancer

Radiotherapy for Breast Cancer

Treating Breast Oil Cysts

Chemotherapy for Breast Cancer

Breast Cancer Screening

Familial Breast Cancer

A Guide to Checking your Breasts for Lumps

What is the BRCA2 Gene?

Breast Cancer Epidemiology

What is the HER2 Gene?

Breast Cancer Symptoms

What is Metastatic Breast Cancer?

Pathophysiology of the Link Between Obesity and Breast Cancer

Intraductal Papilloma - Benign Tumors of the Breast

Breast Cancer Prognosis

What is Invasive Ductal Breast Cancer?

Sentinel Lymph Nodes

What Does a Quadrantectomy Involve?

What is Breast Cancer?

Detecting breast cancer in dense breasts

What are Aromatase Inhibitors?

Radial Scar of the Breast

History of Breast Cancer

Breast Cancer Causes

Breast Cancer Management

What is the BRCA1 Gene?

What is Ductal Carcinoma in Situ (DCIS)?

What is a Mammary Gland?

Breast Cancer Society and Culture

Microwave Imaging for Breast Cancer Versus X-Ray Mammograms

Microwave Imaging for Breast Cancer: Procedure

Living with Breast Cancer

Thermography versus Mammography: Which is Best?

What Does a Sentinel Node Biopsy Involve?

Gail Model (Breast Cancer Risk Assessment Tool)

Latest Breast Cancer News and Research

Machine learning model filters out the biological noise in liquid biopsy samples

A machine learning model developed by researchers at the Johns Hopkins Kimmel Cancer Center filters out the biological noise in liquid biopsy samples, helping clinicians better match therapies to their patients' tumors.

9 Jun 2026

Radiology AI systems flag breast cancer signs six years before diagnosis

Three commercially available radiology AI systems have shown the potential to flag early signs of breast cancer up to 6 years before a diagnosis, according to a study published in Radiology, the flagship journal of the Radiological Society of North America (RSNA).

9 Jun 2026

Brain-targeted estrogen reduces breast cancer treatment side effects

Most breast cancers are worsened by estrogens. To combat the recurrence of these cancers, clinicians treat patients with inhibitors for estrogen production, like letrozole. But many patients do not adhere to this treatment due to negative side effects.

8 Jun 2026

DNA study links BRCA genes to aggressive early-onset breast cancer in black women

Black women experience disproportionately elevated risks of developing and dying from early-onset breast cancer. New research published by Wiley online in CANCER, a peer-reviewed journal of the American Cancer Society, reveals the genes that are most likely to be mutated to contribute to these increased risks.

8 Jun 2026

Review highlights TIGIT as a promising second-generation immunotherapy target

Malignant tumors remain a major threat to human health, with conventional therapies and first-generation immune checkpoint inhibitors (ICIs) facing limitations like drug resistance and low response rates.

5 Jun 2026

Study reveals how breast cancer cells hide in the bone marrow

Treating breast cancer remains a major medical challenge worldwide. This is largely due to the ability of breast cancer cells to remain hidden for years before triggering a relapse, which can occur even decades after successful treatment of the primary tumor.

4 Jun 2026

Could GLP-1 drugs help prevent breast cancer? New study points to a possible link

A large retrospective cohort study of 111,646 overweight or obese women found that GLP-1 agonist exposure was associated with lower breast cancer incidence. After propensity-score matching, GLP-1 exposure was linked to nearly 30% lower odds of breast cancer, but the authors stress that randomized trials are needed before these drugs can be considered for prevention.

3 Jun 2026

New AI tool cuts breast cancer biopsy wait times

Women with abnormal mammograms often have to wait for weeks to find out whether they have breast cancer.

2 Jun 2026

City of Hope sets new standard for lifelong, research-driven cancer survivorship care

Supporting the growing number of Americans living with cancer has become one of the most urgent challenges in modern cancer care as more people live years or decades beyond a diagnosis.

2 Jun 2026

GLP-1 medications linked to lower breast cancer risk in women

A retrospective analysis of more than 110,000 women between the ages of 45 and 80 found that those who took GLP-1 medications were about 30 percent less likely to develop breast cancer than those who did not take GLP-1 medications, according to research presented today at the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting (Abstract 10506) by Elizabeth McDonald, MD, PhD, a professor of Radiology in the University of Pennsylvania Perelman School of Medicine and a practicing breast radiologist at Penn's Abramson Cancer Center.

2 Jun 2026

Genetic testing finds breast cancer risks that standard screening models miss

Population-based pathogenic variant testing identified breast cancer susceptibility gene carriers who would often be missed by clinical risk models, even when polygenic risk scores were added. In the WISDOM Study analysis, fewer than 1% of high-penetrance variant carriers would have received the same high-risk screening recommendation using clinical plus polygenic risk alone.

1 Jun 2026

Study evaluates statistical models for estimating breast cancer risk

Researchers from Trinity College Dublin, St James's Hospital, and collaborating institutions have carried out the most comprehensive review to date of tools used to estimate breast cancer risk in women with a family history of the disease.

1 Jun 2026

Millions live with undiagnosed heart rhythm disorders – World Heart Rhythm Week 2026 calls for urgent action

Millions of people worldwide are living with undiagnosed heart rhythm disorders that can lead to stroke, heart failure or sudden cardiac death – often with little or no warning.

1 Jun 2026

Gene test helps many breast cancer patients avoid chemotherapy

Many people with breast cancer can safely avoid chemotherapy with the use of a gene test, potentially sparing them unnecessary side effects without increasing the risk of the cancer returning, a large international clinical trial led by UCL has found.

29 May 2026

Survey reveals critical knowledge gaps in maternal health recommendations

Most Americans know that how well a mother takes care of herself before and during pregnancy affects the health of a baby, but many people remain unclear about some specific maternal health recommendations, including when to start avoiding alcohol, according to a new nationally representative survey from the Annenberg Public Policy Center (APPC) of the University of Pennsylvania.

29 May 2026