期刊
INTERNATIONAL JOURNAL OF SURGICAL PATHOLOGY
卷 22, 期 2, 页码 113-119出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/1066896913517394
关键词
papillary; thyroid; microcarcinoma; carcinoma; PTmC; PTC
资金
- Portuguese Foundation for Science and Technology by the project Microenvironment, Metabolism and Cancer
- Programa Operacional Regional do Norte under the Quadro de Referencia Estrategico Nacional (QREN) [ON.2-O Novo Norte]
- Fundo Europeu de Desenvolvimento Regional (FEDER)
The incidence of papillary thyroid microcarcinoma (PTmC) has been increasing everywhere due to the improvement of imaging and morphological diagnoses and probably also due to environmental alterations. Despite this, the mortality caused by thyroid cancer has not increased, reflecting the low clinical aggressiveness of most papillary thyroid carcinomas (PTCs) and the quality of the available treatment. The criteria used to classify PTmC remain questionable, making the clinical risk evaluation of these lesions very difficult. There is no solid basis for establishing the most appropriate tumor size (currently <10 mm) to distinguish PTmC from PTC. Moreover, PTmCs encompass all sorts of PTC histotypes, thus turning the whole group of PTmC genetically and biologically heterogeneous. In this review, we address the 2 most interesting issues from a practical standpoint: Are there any specific morphological or molecular features distinguishing PTmC from PTC? Is it possible to predict the clinical behavior of PTmC in fine needle aspiration biopsy and in surgical specimens, using morphological and/or molecular markers?
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