When Morphology Meets Somatic Mutations: The New Possible Scenario in Thyroid Fine-Needle Aspiration

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2016

Autores

Rossi, ED (Autor) Outra; Fernando Schmitt (Autor) FMUP

Revista

Título: Acta Cytologica

Vol. 60

Páginas: 93-96

ISSN: 0001-5547

Editora: Karger

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00M-3MF

DOI: 10.1159/000446796

Abstract (EN): This study points to the analysis of the morphological features suggestive of somatic mutations, mostly the BRAF(V600E) mutation, on cytological samples of thyroid carcinomas. According to the literature, the application of ancillary techniques on cytology comes in handy as a challenging aid in ruling out a malignant outcome on both conventional and liquid-based cytological preparations. However, the evaluation of somatic mutations, including BRAF(V600E), usually performed by DNA techniques, may have some limitations in a worldwide diffusion. In this perspective, few authors emphasized the morphological search for BRAF(V600E) mutations harbored in papillary thyroid carcinoma (PTC) and characterized by specific architectural and cellular findings (i.e. eosinophilic cells defined as 'plump cells' and sickle-shaped nuclei). Hence, the detection of eosinophilic cytoplasm of mutated PTC cells seems to suggest the possible involvement of the 'Warburg effect' pioneering the ability of cancer cells to convert glucose into lactic acid. The recent yields of immunohistochemical expression of monocarboxylate transporters in mutated PTCs may suggest the accumulation of lactate in these plump cells. Equally importantly, the detection of these morphological findings using fine-needle aspiration cytology may be helpful in triaging thyroid lesions and limiting costs. Additionally, it may lead to the stratification of the malignant risk and personalized management in cases with multifocal lesions. (C) 2016 S. Karger AG, Basel

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4