3 years ago

Noninvasive follicular thyroid neoplasm with papillary-like nuclear features: a review for pathologists

Ozgur Mete, Justine A Barletta, Elham Khanafshar, Raja R Seethala, Yuri E Nikiforov, Virginia A LiVolsi, Giovanni Tallini, Peter M Sadow, Lester DR Thompson, Zubair W Baloch

The rising incidence of papillary thyroid carcinoma is linked in part to inclusion of noninvasive follicular variant of papillary thyroid carcinoma. Despite its designation as carcinoma, noninvasive follicular variant of papillary thyroid carcinoma appears to be exceptionally indolent, often over treated by current treatment practices. Additionally, criteria for diagnosis have historically been subjective and challenging. Recently, an international multidisciplinary collaborative group performed a clinicopathologic survey of such cases with extended follow-up and concluded based on the outcome data that a revision in nomenclature was warranted, proposing ‘Noninvasive Follicular Thyroid Neoplasm with Papillary-like Nuclear Features (NIFTP).’ This monograph is a synopsis and guide for pathologists on NIFTP and focuses on histologic features, including inclusion and exclusion criteria used to define NIFTP, as well as grossing guidelines, reporting practices, and potential diagnostic limitations.

Publisher URL: https://www.nature.com/articles/modpathol2017130

DOI: 10.1038/modpathol.2017.130

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