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Types of Biopsies  

What are the different types of biopsies?

There are four common methods of biopsy:

  • Fine needle aspiration biopsy (FNAB) uses a very thin needle to collect fluid or cells directly from the mass. Usually, the doctor can perform this procedure while feeling the lump to help guide the needle. If a mass was seen on a mammogram, but the lump cannot be felt easily, the doctor may use ultrasound or computer-guided imaging to help locate the mass and guide the position of the needle. Use of computer-guided imaging to locate the mass and help guide the position of the needle is called stereotactic needle biopsy.

    If this procedure locates fluid, it is an indication that the lump is a cyst. If the procedure locates a solid mass, a biopsy sample of the mass will be removed and sent to a laboratory for further analysis under the microscope. Solid masses can be malignant.

    Using FNAP, mammography, and a clinical breast exam, a doctor can determine with about 98% accuracy whether a lump is benign or malignant. If, however, there is still doubt, a core needle biopsy may be ordered.


  • Core needle biopsy, which uses a larger needle to remove a small cylinder of tissue from the lump and send it to a laboratory for further analysis under the microscope.


  • Incisional biopsy, which involves surgical removal of just a portion of the mass, which is sent to a laboratory for further analysis under the microscope.


  • Excisional biopsy, which involves surgical removal of the entire mass, which is sent to a laboratory for further analysis under the microscope.


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