Cyto-histology in NET: what is necessary today and what is the future?

Abstract:

:The carcinoid as originally described is part of the relatively large family of neuroendocrine neoplasia found in almost every organ. Historical reasons back their current definitions. Neuroendocrine cancer is most frequently observed in the lung and the digestive tract. In the lung is defined as carcinoid (typical and atypical) for well differentiated, low to intermediate grade, and small cell and large cell neuroendocrine carcinoma for poorly differentiated, high grade. In the digestive system are respectively defined as neuroendocrine tumor (NET) and neuroendocrine carcinoma (NEC) of small and large cell types. Grading and staging are developed for their clinical classification by the World Health Organization (WHO) and the American Joint Committee on Cancer (AJCC). In both anatomical sites the morphological features are overlapping, with bland histology for carcinoid and NET, and aggressive features with extensive necrosis, severe atypia and abundant, atypical mitoses for high grade cancer types. Such features are also essential diagnostic clues in cytological preparations. The confirmation of the neuroendocrine signature by immunohistochemistry is mandatory for the diagnosis; a minimum panel comprising chromogranin A and synaptophysin is recommended in the digestive system. In addition, the application of grading requires the mitotic count and or spotty necrosis assessment for lung, or the mitotic count and the Ki67 assessment in the digestive system.

authors

Inzani F,Petrone G,Fadda G,Rindi G

doi

10.1007/s11154-017-9428-x

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

381-391

issue

4

eissn

1389-9155

issn

1573-2606

pii

10.1007/s11154-017-9428-x

journal_volume

18

pub_type

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