Breast cancer is a disease in which cells in the breast grow erratically and turn into cancer. Learn about symptoms and treatment.
Dense breasts have a higher proportion of glandular and connective tissues relative to fatty tissue.
Cancer screening is any method of looking for cancer before it causes symptoms and may be easier to treat.
Whether for screenings, diagnosis, or treatment for yourself or someone you care about, Yale Cancer Center offers multidisciplinary care.
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.
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.