Abstract
Endoscopic ultrasound provides access for tissue sampling of lesions that would otherwise be difficult or impossible to sample percutaneously. The roles of the endosonographer and cytopathologist, including brief description of echoendoscopes, use of appropriate needle type and caliber, number of passes, and handling and triaging of sample, are described. The cytology of normal gut wall elements as a result of needle contamination at the time of sampling, the value of on-site cytologic interpretation that allows assessment of cytologic adequacy and preliminary diagnosis that prompts the submission of material for ancillary tests and/or changes in needle type, caliber or sampling of additional lesions, and the good communication between the endosonographer and cytopathologist are described and emphasized. The aspiration technique of solid and cystic masses is extensively covered. Appropriate images complement the text.
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Further Reading
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Bardales, R., De Las Casas, L., Nawras, A., Mallery, S. (2015). Technical 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_2
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DOI: https://doi.org/10.1007/978-3-319-12796-5_2
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