Abstract
Endoscopic ultrasonography (EUS) uses the technology of endoscopy to introduce high-frequency ultrasound probes into the upper or lower part of the gastrointestinal (GI) tract to visualize its wall and adjacent structures and identify lesions occurring in the wall of the GI tract and surrounding tissue. EUS is highly accurate in this endeavor, but addition of fine-needle aspiration (FNA) has empowered EUS, making EUS-FNA a highly accurate, minimally invasive, and cost effective technique for sampling lesions around the midline, including the GI wall and providing with a cytologic diagnosis crucial for clinical decision making. A brief history, statistics, impact in patient management, benefits, and complications of these modalities are described. New applications of EUS are also described at the end of the chapter.
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Further Reading
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Bardales, R. (2015). General Considerations of EUS and EUS-FNA. In: Bardales, R. (eds) Cytology of the Mediastinum and Gut Via Endoscopic Ultrasound-Guided Aspiration. Essentials in Cytopathology, vol 25. Springer, Cham. https://doi.org/10.1007/978-3-319-12796-5_1
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DOI: https://doi.org/10.1007/978-3-319-12796-5_1
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