Fine needle aspiration
: The use of a thin needle to withdraw material from the body. For example, this method is commonly used to determine whether a nodule in the thyroid gland is benign or malignant. A fine gauge needle is placed into the nodule and a drop of blood is withdrawn. The cells are studied under the microscope by an pathologist.

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fine needle aspiration n the process of obtaining a sample of cells and bits of tissue for examination by applying suction through a fine needle attached to a syringe abbr. FNA compare core biopsy

Medical dictionary. 2011.

Look at other dictionaries:

  • fine-needle aspiration — n. (Pathology) FNA, removal of tissue or fluid or other material from the body with a fine needle for examination …   English contemporary dictionary

  • fine-needle aspiration — The removal of tissue or fluid with a needle for examination under a microscope. Also called needle biopsy …   English dictionary of cancer terms

  • fine-needle aspiration — see under biopsy …   Medical dictionary

  • fine-needle aspiration cytology — a technique that uses samples obtained by fine needle aspiration to provide information on the cells of tumours or cysts. It is useful for detecting the presence of malignant cells, particularly in lumps of the breast and thyroid. See also… …   Medical dictionary

  • fine-needle aspiration cytology — FNA cytology a technique that uses samples obtained by fine needle aspiration to provide information on the cells of tumours or cysts. It is useful for detecting the presence of malignant cells, particularly in lumps of the breast and thyroid.… …   The new mediacal dictionary

  • fine-needle aspiration biopsy — aspiration biopsy using a fine needle; for superficial tissue such as the thyroid, breast, or prostate the needle is unguided but for deep tissue it must be guided radiologically …   Medical dictionary

  • testicular fine-needle aspiration — a type of testicular sperm extraction in which sperm is retrieved from the testicle by fine needle aspiration, done in men with obstructive azoospermia …   Medical dictionary

  • fine needle — n a long thin hollow needle with a narrow bore used esp. to obtain samples by fine needle aspiration also a solid hairlike needle used in acupuncture * * * a very thin, highly flexible steel needle with a narrow inner core used to cannulate very… …   Medical dictionary

  • Needle aspiration biopsy — FNA redirects here. For other uses, see FNA (disambiguation). Needle aspiration biopsy Diagnostics [[file …   Wikipedia

  • needle biopsy — n any of several methods (as fine needle aspiration or core biopsy) for obtaining a sample of cells or tissue by inserting a hollow needle through the skin and withdrawing the sample from the tissue or organ to be examined * * * biopsy in which… …   Medical dictionary

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