A needle biopsy uses a hollow needle to remove samples of tissue or cells from the breast. These samples are then studied under a microscope to see if they are cancerous. If they are, then more tests will be done to help you and your health care provider plan your treatment. Learn more about these tests.
Needle biopsies can be used to study lumps that can be felt (palpable masses) and suspicious areas that can only be seen on a mammogram or other imaging tests (non-palpable masses). There are two types of needle biopsies: core needle biopsy and fine needle aspiration.
Updated 10/26/09
