Introduction to fine needle aspiration technique

Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) has been used in clinical diagnosis for nearly 20 years and has become an important diagnostic basis for many diseases. Endoscopic ultrasonography can detect the lesions around the digestive tract that are several millimeters in size. The pathological study of cells and tissues obtained by puncture of the lesions helps to determine the nature, histological origin and pathological characteristics of the lesions. Eus-fna helps to identify metastatic lesions in lymph nodes and other organs when the nature of the tumor has been established, and the accuracy of staging is crucial for the choice of treatment. Eus-fna is accurate, safe, simple and fast. In recent years, EUS-FNA has been widely used in China. In order to improve the positive rate of EUS-FNA, standardize the operation of EUS-FNA, and formulate the clinical application guidelines of EUS-FNA in China for the reference of clinicians.

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