Final answer:
Fine needle aspiration (FNA) is a medical procedure where a fine needle is inserted into a body site to draw fluid for examination and diagnosis. It is commonly used to obtain samples from masses or lumps in various parts of the body, such as the breast, thyroid, and lymph nodes.
Step-by-step explanation:
Fine needle aspiration (FNA) is a medical procedure where a fine needle is inserted into a body site to draw fluid for examination and diagnosis. It is commonly used to obtain samples from masses or lumps in various parts of the body, such as the breast, thyroid, and lymph nodes. The fluid collected during FNA is then analyzed to determine the presence of abnormal cells, infection, or other conditions.
FNA is less invasive compared to other procedures that use larger needles. It is typically performed under guidance, such as ultrasound or CT imaging, to ensure accurate needle placement. FNA is a relatively quick procedure that can be done in an outpatient setting, and it usually causes minimal pain or discomfort for the patient.