FINE Needle Aspiration – FNA – Procedure and Contraindications Puncture Fine Needle Aspiration (FNA) is done to get a sample of cells of nodules or masses for microscopic examination. This test is indicated for the evaluation of nodules, masses or p alpable mass which has been visualized by previous imaging techniques. Usually, the examination is limited to superficial tumours. Nodules are found more commonly on mammary gland and the thyroid and this technique is used to take few cells out of the nodules for microscopic examination The cells are placed on microscope slides and examined by a cytopathologist (person studying alterations in the cell). Recent studies showed that this method gives around 75% sensitivity and specificity of over 90%. Also having a rate of false-positive results of approximately 01%, and false-negative results of 25 %. The false-negative results are more common because the needle was not inserted directly into cancer . The needle may also have punched the
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