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The Papanicolaou Society of Cytopathology has developed a set of guidelines for pancreatobiliary cytology including indications for endoscopic ultrasound‐guided fine‐needle aspiration, terminology and nomenclature of pancreatobiliary disease, ancillary testing, and post‐biopsy management. All documents are based on the expertise of the authors, a review of the literature, discussions of the draft...
Intraductal papillary neoplasms (IPNs) of the biliary tract are uncommon lesions that may be solitary or may spread extensively along the biliary tree. Some biliary IPNs are histologically and radiologically similar to intraductal papillary mucinous tumors (IPMNs) of the pancreas and present a risk for progression to invasive cholangiocarcinoma. Unlike pancreatic IPMNs, little is known about their...
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