Core Needle Breast Biopsy

A Core Needle Breast Biopsy is a medical test which can identify the cause of an abnormal lump or calcification in the breast. A radiologist performs this procedure in the radiology department. During the procedure, the radiologist inserts a needle into the abnormal area under the imaging guidance (ultrasound or X-ray) and removes a sample of the tissue, which is given to a pathologist, who looks at it under a microscope. The pathologist can determine what the abnormal tissue is: cancer, non-cancerous tumor, infection, or scar.

Risks and Complications
During the biopsy, there is a less than one percent risk of internal or external bleeding or the tissue removed may not be enough for testing.
Call your doctor if you notice any of the following:
  1. Increased bleeding at the biopsy site. While waiting to see the doctor, place pressure on the site and/or use a cold pack to temporarily stop bleeding.
  2. Chills for fever (temperature above 38 degrees Celsius or 100 degrees Fahrenheit)
  3. Pain, swelling, and/or redness at the biopsy site that is not managed by a cold compress or pain medication.
*** If you are unable to reach your doctor, go to a hospital near you. ***

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