Abstract
In this chapter, we are focusing on gastrointestinal tract, pancreas, and bile ducts cytology. The conventional cytology sampling methods in GI and pancreaticobiliary tract are brushing, which is an easy and quick way to diagnose most of the mucosal-based disease. With the advent of new diagnostic tools, such as endoscopic ultrasound-directed fine-needle aspirates (EUS-FNA), submucosal-based mass lesions and regional lymph nodes are readily accessible by minimal invasive cytology method nowadays. Pancreatic cancer is one of the leading causes of death in Western Country. The cytological samples for pancreatic lesions include CT or EUS-guided fine-needle aspiration (FNA) and pancreatic or common bile duct brushing. However, EUS-FNA is more commonly performed now. Here we discuss commonly encountered questions in GI and pancreaticobiliary cytology practice and encompass the whole spectrum of morphologic findings from normal elements, reactive conditions, infectious lesions, and neoplasms. Common differential diagnoses, immunohistochemistry applications, and diagnostic pitfalls are emphasized. The updated knowledge on biomarker testing in pancreatic cancer is reviewed. Six illustrative cases are presented with take-home messages from each case.
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Zhou, Z., Bernadt, C.T., Xu, H. (2020). Gastrointestinal, Pancreas, and Bile Ducts Cytology. In: Xu, H., Qian, X., Wang, H. (eds) Practical Cytopathology . Practical Anatomic Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-24059-2_6
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DOI: https://doi.org/10.1007/978-3-030-24059-2_6
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