Thyroid nodules are a common clinical problem with the widespread use of ultrasonography. Fine needle aspiration (FNA) is the mainstay for diagnosing a thyroid malignancy. There have been several guidelines on when to perform FNA in thyroid nodules. This review is based on several published recommendations and helps physicians easily understand the factors favoring FNA.
Keywords: Biopsy, fine-needle; Indications; Thyroid; Thyroid malignancy; Thyroid nodule; Ultrasonography.