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Biopsy of the Thyroid

An ultrasound-guided fine needle aspiration biopsy uses sound waves to help locate a nodule or abnormality within the thyroid and remove a tissue sample for examination under a microscope. The procedure is less invasive than surgical biopsy, leaves little to no scarring and does not involve exposure to ionizing radiation.

This procedure requires little to no special preparation. Tell your doctor about any medications you’re taking, such as aspirin or blood thinners. How does the procedure work? The physician inserts a fine gauge needle through the skin and advances it into the thyroid nodule. Samples of the cells are then obtained and put on a slide for review by the pathologist.