Details

Autor(en) / Beteiligte

• Pitman, Martha B.
• Centeno, Barbara A.
• Reid, Michelle D.
• Saeig, Mauro
• Siddiqui, Momin T.
• Layfield, Lester J.
• Perez-Machado, Miguel
• Weynand, Birgit
• Stelow, Edward B.
• Lozano, Maria D.
• Fukushima, Noriyoshi
• Cree, Ian A.
• Mehrotra, Ravi
• Schmitt, Fernando C.
• Field, Andrew S.

Titel

A brief review of the WHO reporting system for pancreaticobiliary cytopathology

Ist Teil von

• Journal of the American Society of Cytopathology JASC, 2023-07, Vol.12 (4), p.243-250

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2023

Quelle

MEDLINE

Beschreibungen/Notizen

• The World Health Organization (WHO), the International Academy of Cytology, and the International Agency for Research on Cancer have developed an approach to standardized reporting of pancreaticobiliary cytopathology. The WHO Reporting System for Pancreaticobiliary Cytopathology (WHO System) revises the Papanicolaou Society of Cytopathology (PSC) System for Reporting Pancreaticobiliary Cytology published in 2015 and replaces the 6 PSC categories with 7 categories: “Insufficient/Inadequate/Nondiagnostic”; “Benign/Negative for malignancy”; “Atypical”; “Pancreaticobiliary neoplasm, low risk/grade (PaN-low)”; “Pancreatic neoplasm, high risk/grade (PaN-High)”; “Suspicious for malignancy”; and “Malignant”. In the PSC system, there is a single category for “Neoplastic” lesions that includes 2 groups, 1 for benign neoplasms and 1 named “Neoplastic-other”, dominated by premalignant intraductal neoplasms primarily intraductal papillary mucinous neoplasms and low-grade malignant neoplasms (pancreatic neuroendocrine tumors (PanNET) and solid pseudopapillary neoplasms (SPN). In the WHO System, benign neoplasms with virtually no risk of malignancy are included in the “Benign” category and low-grade malignancies (PanNET and SPN) are included in the “Malignant” category, as per the 5th edition of the WHO Classification of Digestive System Tumors, while the non-invasive pre-malignant lesions of the ducts are divided by the cytomorphological grade of the epithelium into PaN-low and PaN-high with distinctly different risks of malignancy. Within each category, key diagnostic cytopathologic features and the ancillary studies for diagnostic and prognostic evaluation, as well as the implications of diagnosis for patient care and management, are outlined. Reporting and diagnostic management options recognize the variations in the availability of diagnostic and prognostic ancillary testing modalities in low- and middle-income countries. •The World Health Organization (WHO) Cytopathology Reporting Systems are new standardized reporting systems for cytopathology reporting that align classification of tumors with that of the 5th edition of the WHO Classification of Tumors. This brief review covers the diagnostic categories for pancreaticobiliary cytology, highlighting the differences with those of the Papanicolaou Society of Cytopathology Reporting System for Pancreaticobiliary Cytology.