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What is a fine-needle aspiration for a breast biopsy?

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A biopsy is a test that examines a tissue sample under a microscope. During a fine-needle aspiration, your doctor uses a small needle to take a sample of cells from the area on your breast with suspicious tumors or changes. If the lump is a cyst (a fluid-filled sac), the procedure may collapse it. This fluid will be examined under a microscope for any signs of cancer. If the lump is solid, cells can be smeared onto slides for examination.

SOURCES: The Mayo Clinic. The American Cancer Society.

Reviewed by Laura J. Martin on November 17, 2019

SOURCES: The Mayo Clinic. The American Cancer Society.

Reviewed by Laura J. Martin on November 17, 2019

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