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What is a fine-needle aspiration?

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During a fine-needle aspiration, a doctor uses a small needle is used to take a sample of cells from the area in question. If the lump is a cyst (a fluid-filled sac), the procedure may cause it to collapse. 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 July 15, 2017

SOURCES: The Mayo Clinic. The American Cancer Society.

Reviewed by Laura J. Martin on July 15, 2017

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What is a core biopsy for breast cancer?

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