Your doctor may use images of the inside of your body to help guide the needle. This may be done with an
x-ray, or CT scan.
You will be positioned for the easiest access to the site. The site where the needle will be inserted will be cleaned. Anesthesia will be applied to numb the site. You will be asked to stay still. A thin, hollow needle will then be inserted through the skin to the site. The needle may need to be inserted more than once. The images may be checked to make sure the needle is in the right place. After the needle is in the proper place, tissue or fluid will be withdrawn. You may feel a pinch, pressure, or nothing at all. The needle will be removed after the sample is taken. The site will be bandaged.
The amount of pain you feel depends on the part of the body having the FNB. The anesthesia and sedative will prevent pain. You may feel a pinch or pressure. If you feel pain, tell the doctor right away.
The site will be tender after the FNB. Talk to your doctor about medicine to help manage pain.
Biopsy for breast cancer diagnosis:
Fine needle aspiration biopsy. UCSF Health website. Available at:
https://www.ucsfhealth.org/education/biopsy_for_breast_cancer_diagnosis/fine_needle_aspiration_biopsy/index.html. Accessed March 26, 2018.
Fine needle aspiration biopsy. American Academy of Otolaryngology—Head and Neck Surgery website. Available at: ...(Click grey area to select URL) Accessed March 26, 2018.
Fine needle aspiration, fluid aspiration, and/or core biopsy. National Institute of Health Patient Education website. Available at:
https://www.cc.nih.gov/ccc/patient_education/procdiag/irbiopsy.pdf. Accessed March 26, 2018.