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What’s New in Thyroid Tumor Classification, the 2017 World Health Organization Classification of Tumours of Endocrine Organs

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Thyroid FNA Cytology

Abstract

This chapter presents a brief summary and an overview of the main changes in the classification of thyroid tumors in the fourth edition of the World Health Organization (WHO) Classification of Tumours of Endocrine Organs published in 2017. The important topic of the diagnostic categories of follicular-patterned nodules with borderline histopathological features for a diagnosis of carcinoma covered in the fourth edition of the WHO represents the main focus of this chapter in order to provide the context for other chapters of this volume that also cover the topic.

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Correspondence to Giovanni Tallini .

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Tallini, G., de Biase, D., Repaci, A., Visani, M. (2019). What’s New in Thyroid Tumor Classification, the 2017 World Health Organization Classification of Tumours of Endocrine Organs. In: Kakudo, K. (eds) Thyroid FNA Cytology. Springer, Singapore. https://doi.org/10.1007/978-981-13-1897-9_4

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