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Fine-needle aspiration biopsy. When is it most beneficial?

When fine-needle aspiration biopsy is done skillfully, it is an accurate, efficient, and cost-effective method for diagnosing many diseases in selected patients. This article describes its uses for palpable masses of the thyroid, breast, and peripheral lymph nodes and some nonpalpable lesions. The authors also discuss its advantages and disadvantages and technical considerations that affect accuracy.