scholarly journals The Ki-67 antigen in the new 2021 World Health Organization classification of lung neuroendocrine neoplasms

Pathologica ◽  
2021 ◽  
Vol 113 (5) ◽  
pp. 377-387
Author(s):  
Giuseppe Pelosi ◽  
William D. Travis
2016 ◽  
Vol 140 (5) ◽  
pp. 437-448 ◽  
Author(s):  
Joo Young Kim ◽  
Seung-Mo Hong

Context.—Gastrointestinal (GI) and pancreatobiliary tracts contain a variety of neuroendocrine cells that constitute a diffuse endocrine system. Neuroendocrine tumors (NETs) from these organs are heterogeneous tumors with diverse clinical behaviors. Recent improvements in the understanding of NETs from the GI and pancreatobiliary tracts have led to more-refined definitions of the clinicopathologic characteristics of these tumors. Under the 2010 World Health Organization classification scheme, NETs are classified as grade (G) 1 NETs, G2 NETs, neuroendocrine carcinomas, and mixed adenoneuroendocrine carcinomas. Histologic grades are dependent on mitotic counts and the Ki-67 labeling index. Several new issues arose after implementation of the 2010 World Health Organization classification scheme, such as issues with well-differentiated NETs with G3 Ki-67 labeling index and the evaluation of mitotic counts and Ki-67 labeling. Hereditary syndromes, including multiple endocrine neoplasia type 1 syndrome, von Hippel-Lindau syndrome, neurofibromatosis 1, and tuberous sclerosis, are related to NETs of the GI and pancreatobiliary tracts. Several prognostic markers of GI and pancreatobiliary tract NETs have been introduced, but many of them require further validation. Objective.—To understand clinicopathologic characteristics of NETs from the GI and pancreatobiliary tracts. Data Sources.—PubMed (US National Library of Medicine) reports were reviewed. Conclusions.—In this review, we briefly summarize recent developments and issues related to NETs of the GI and pancreatobiliary tracts.


2001 ◽  
Vol 18 (6) ◽  
pp. 1059-1068 ◽  
Author(s):  
E. Brambilla ◽  
W.D. Travis ◽  
T.V. Colby ◽  
B. Corrin ◽  
Y. Shimosato

2018 ◽  
Vol 47 (11-12) ◽  
pp. e187-e200 ◽  
Author(s):  
Chiara Villa ◽  
Catherine Miquel ◽  
Dominic Mosses ◽  
Michèle Bernier ◽  
Anna Luisa Di Stefano

2020 ◽  
Vol 77 (2) ◽  
pp. 181-185 ◽  
Author(s):  
Puay Hoon Tan ◽  
Ian Ellis ◽  
Kimberly Allison ◽  
Edi Brogi ◽  
Stephen B Fox ◽  
...  

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