Open AccessDifferential expression of Galectin-3 in papillary projections of malignant and non-malignant hyperplastic thyroid lesions
Author(s) -
S Cvejić,
B Svetlana Savin-Zegarac,
Mina Petrović,
R Ivan Paunovic,
B Svetislav Tatic,
J Havelka
Publication year - 2003
Publication title -
acta chirurgica iugoslavica
Language(s) - English
Resource type - Journals
eISSN - 2406-0887
pISSN - 0354-950X
DOI - 10.2298/aci0303067c
Subject(s) - medicine , pathology , immunohistochemistry , thyroid , differential diagnosis , papillary thyroid cancer , hyperplasia , thyroid carcinoma , galectin 3
Galectin-3 is a a beta-galactoside binding protein recently proposed to be a promising presurgical molecular marker for distinguishing benign from malignant thyroid neoplasms. We analyzed galectin-3 expression immunohistochemically in papillary areas of hyperplastic lesions of benign thyroid tissue in comparison with malignant papillary projections of papillary thyroid carcinoma (PTC). A monoclonal antibody to galectin-3 and ABC immunohistochemical technique were used to evaluate galectin-3 expression in 26 cases of benign papillary hyperplasia (8 cases of hyperplastic adenoma, 8 cases of hyperplastic colloid goiter, 10 cases of Graves disease) in comparison with 25 cases of PTC. Immunohistochemical results showed no reactivity for galectin-3 in papillary areas of benign hyperplastic lesions. Strong cytoplasmic galectin-3 immunoreactivity was found in all 25 cases of PTC. These results show that galectin-3 expression is a feature of malignant papillary projections but not of benign papillary hyperplasia. Thus, the immunohistochemical evaluation of galectin-3 might contribute to differential diagnosis between malignant and benign thyroid lesions with papillary projections.