Fact Sheets

Breast Cancer
Breast cancer is a disease in which cells in the breast grow erratically and turn into cancer. Learn about symptoms and treatment.
Dense Breasts
Dense breasts have a higher proportion of glandular and connective tissues relative to fatty tissue.
Diagnosing Cancer
Doctors only diagnose cancer after ruling out other possible causes for symptoms and performing tests to check and double-check the diagnosis. Learn more about these tests.
Cancer
Whether for screenings, diagnosis, or treatment for yourself or someone you care about, Yale Cancer Center offers multidisciplinary care.
Radiation Therapy
Half of all people with cancer are treated with radiation therapy. It is effective for treating almost all types of cancer in almost any part of the body.
Inflammatory Breast Cancer
Inflammatory breast cancer is an aggressive form of breast cancer that can progress over several weeks or months. Learn about symptoms and treatment.
Breast Reconstruction
For women who have had a mastectomy or lumpectomy, breast reconstruction surgery helps restore the appearance of the breasts.
Clinical Trials
New drugs and medical treatments need to go through a series tests called clinical trials. This is how new and better treatments are made possible.
Sentinel Lymph Node Biopsy
A sentinel lymph node biopsy is a procedure to determine whether cancer has spread to the lymph nodes. Learn about this procedure.
Metastatic Cancer
Metastatic cancer, also known as stage IV (or 4), is the name for cancer that has spread from the site in the body where it started to another part of the body. Cancer can spread to any part of the body, but it most often spreads to the lungs, bones, liver, and brain.