Cytological criteria of high‐grade epithelial atypia in the cyst fluid of pancreatic intraductal papillary mucinous neoplasms

The recognition of epithelial cells with high‐grade atypia (HGA) in the cyst fluid of an intraductal papillary mucinous neoplasm (IPMN) identifies a cyst at high risk of invasive carcinoma. To the best of the authors' knowledge, the cytological features of HGA have not been systematically analyzed to define diagnostic criteria.

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