Galectin-3 Expression and BRAF Mutation in Cases of Cytologically Suspicious Papillary Thyroid Carcinoma
Korean Journal of Pathology
; : 191-198, 2010.
Article
em Ko
| WPRIM
| ID: wpr-48171
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND: Fine needle aspiration, which is known as the most accurate and cost-effective method for diagnosis of thyroid nodule, still may result in indeterminate cases that are pauci-cellular and show minor nuclear atypia, but most cases are associated with suspicion of papillary thyroid carcinoma (PTC). A B-type Raf kinase (BRAF) mutation was found in about half of PTCs and galectin-3 was expressed by malignant tumors, helping us to differentiate malignancies from benign lesions. METHODS: Cases studied included histologically 44 confirmed PTC cases and 18 benign cases previously diagnosed as suspicious of PTC using cytologic examination. Cases were analyzed for galectin-3 expression by immunohistochemical staining and BRAF mutation by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) with a new restriction enzyme. RESULTS: All 44 cases of PTC and 8 of 18 benign controls expressed galectin-3. BRAF mutations were found in only 9 of the 44 PTC cases. Assessment of galectin-3 expression demonstrated high sensitivity but low specificity. Evaluation of BRAF mutation revealed high specificity and low sensitivity. CONCLUSIONS: This study suggests that the combined application of these two methods for PTC of suspicious cytology is complementary.
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Assunto principal:
Fosfotransferases
/
Glândula Tireoide
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Fator IX
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Neoplasias da Glândula Tireoide
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Carcinoma
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Sensibilidade e Especificidade
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Nódulo da Glândula Tireoide
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Galectina 3
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Biópsia por Agulha Fina
Tipo de estudo:
Diagnostic_studies
Idioma:
Ko
Revista:
Korean Journal of Pathology
Ano de publicação:
2010
Tipo de documento:
Article