eISSN: 2084-9869
ISSN: 1233-9687
Polish Journal of Pathology
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1/2012
vol. 63
 
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abstract:

Expression of cytokeratin 19, HBME-1 and galectin-3 in neoplastic and nonneoplastic thyroid lesions

Emine Aycan MataracI
,
Banu Yilmaz Özgüven
,
Fevziye Kabukçuoglu

Pol J Pathol 2012; 1: 58-64
Online publish date: 2012/04/24
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In this study, 105 cases of thyroid lesions were evaluated to assess the role of HBME-1, cytokeratin-19 (CK-19), galectin-3 in distinguishing benign from malignant thyroid lesions. Thirty-seven papillary, 10 follicular, 6 medullary, 1 mixed medullary follicular cell carcinoma, 3 poorly differentiated carcinoma, 18 adenomatous nodular hyperplasia, 30 follicular adenoma cases were included in the study. Immunohistochemical staining was performed with HBME-1, CK-19, galectin-3 on cross-sections derived from selected paraffin blocks. Benign and malignant lesions were compared in terms of intensity, percentage and type of staining with CK-19, HBME-1 and galectin-3, and a statistically significant difference (p < 0.05) was found. The percentage and intensity of staining was higher in malignant lesions. Especially, strong and diffuse expressions of CK19, HBME-1 and galectin-3 were observed in papillary carcinomas. Membranous (luminal) staining was seen more frequently in malignant lesions; cytoplasmic staining in benign lesions. It was concluded that these markers could assist in the diagnosis of thyroid lesions with cellular properties suspicious for the diagnosis of papillary carcinoma and without capsule and vessel invasion. They may be used especially in cases where the follicular variant of papillary carcinoma, follicular adenoma and follicular carcinoma are confused with each other and follicular adenoma cannot be differentiated from follicular carcinoma.
keywords:

thyroid, malignancy, benign lesions, cytokeratin 19, HBME-1, galectin-3, immunohistochemistry

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