Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria

Abstract In 2017, the WHO classification of tumours of the endocrine organs established the criteria for a NIFTP diagnosis. The present paper considers some aspects that are still debated or unresolved: the real incidence and clinical meaning of multifocal/multinodular lesions, the biological behavi...

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Autores principales: Valentina Canini, Davide Leni, Angela Ida Pincelli, Marcella Scardilli, Mattia Garancini, Chiara Villa, Camillo Di Bella, Giulia Capitoli, Riccardo Cimini, Biagio Eugenio Leone, Fabio Pagni
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Publicado: Nature Portfolio 2019
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spelling oai:doaj.org-article:04500db918d74c9991719d89259342812021-12-02T15:09:16ZClinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria10.1038/s41598-019-49851-12045-2322https://doaj.org/article/04500db918d74c9991719d89259342812019-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-49851-1https://doaj.org/toc/2045-2322Abstract In 2017, the WHO classification of tumours of the endocrine organs established the criteria for a NIFTP diagnosis. The present paper considers some aspects that are still debated or unresolved: the real incidence and clinical meaning of multifocal/multinodular lesions, the biological behaviour of micro-NIFTP, the sprinkling phenomenon and the corresponding modifications to the FNA reporting systems based on changes to the ROM. Moreover, the paper suggests possible scenarios for the clinical-pathological management of this entity. From the initial 1470 cases, a group of 68 NIFTPs was recruited in a 9 year-long period. The average age at diagnosis was 55 years. The average diameter of the lesion was 1.7 cm (0.1 cm–10 cm). In 41 cases (60.1%), the lesion was inserted in the context of a multinodular background. In 12 cases, the diagnosis was incidental and the pre- operative FNA was performed on a different target. In 10 out of 68 cases, there was a multifocal NIFTP; in 14.7% of patients, PTC-like nuclear features showed sprinkling phenomenon. The cytological revision allocated 21 cases (49%) to the SIAPEC TIR3 indeterminate class and a nuclear score 2 or 3 were identified in 25 smears. Multifocality is part of the spectrum of NIFTPs, that can arise in a multinodular background with variable sizes from microscopic lesions to very large ones. Cytopathological criteria such as an evaluation of the nuclear score may help the pathologists in promoting a NIFTP diagnosis in the preoperative setting.Valentina CaniniDavide LeniAngela Ida PincelliMarcella ScardilliMattia GaranciniChiara VillaCamillo Di BellaGiulia CapitoliRiccardo CiminiBiagio Eugenio LeoneFabio PagniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Valentina Canini
Davide Leni
Angela Ida Pincelli
Marcella Scardilli
Mattia Garancini
Chiara Villa
Camillo Di Bella
Giulia Capitoli
Riccardo Cimini
Biagio Eugenio Leone
Fabio Pagni
Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
description Abstract In 2017, the WHO classification of tumours of the endocrine organs established the criteria for a NIFTP diagnosis. The present paper considers some aspects that are still debated or unresolved: the real incidence and clinical meaning of multifocal/multinodular lesions, the biological behaviour of micro-NIFTP, the sprinkling phenomenon and the corresponding modifications to the FNA reporting systems based on changes to the ROM. Moreover, the paper suggests possible scenarios for the clinical-pathological management of this entity. From the initial 1470 cases, a group of 68 NIFTPs was recruited in a 9 year-long period. The average age at diagnosis was 55 years. The average diameter of the lesion was 1.7 cm (0.1 cm–10 cm). In 41 cases (60.1%), the lesion was inserted in the context of a multinodular background. In 12 cases, the diagnosis was incidental and the pre- operative FNA was performed on a different target. In 10 out of 68 cases, there was a multifocal NIFTP; in 14.7% of patients, PTC-like nuclear features showed sprinkling phenomenon. The cytological revision allocated 21 cases (49%) to the SIAPEC TIR3 indeterminate class and a nuclear score 2 or 3 were identified in 25 smears. Multifocality is part of the spectrum of NIFTPs, that can arise in a multinodular background with variable sizes from microscopic lesions to very large ones. Cytopathological criteria such as an evaluation of the nuclear score may help the pathologists in promoting a NIFTP diagnosis in the preoperative setting.
format article
author Valentina Canini
Davide Leni
Angela Ida Pincelli
Marcella Scardilli
Mattia Garancini
Chiara Villa
Camillo Di Bella
Giulia Capitoli
Riccardo Cimini
Biagio Eugenio Leone
Fabio Pagni
author_facet Valentina Canini
Davide Leni
Angela Ida Pincelli
Marcella Scardilli
Mattia Garancini
Chiara Villa
Camillo Di Bella
Giulia Capitoli
Riccardo Cimini
Biagio Eugenio Leone
Fabio Pagni
author_sort Valentina Canini
title Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
title_short Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
title_full Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
title_fullStr Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
title_full_unstemmed Clinical-pathological issues in thyroid pathology: study on the routine application of NIFTP diagnostic criteria
title_sort clinical-pathological issues in thyroid pathology: study on the routine application of niftp diagnostic criteria
publisher Nature Portfolio
publishDate 2019
url https://doaj.org/article/04500db918d74c9991719d8925934281
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