Distinction Between Papillary Thyroid Hyperplasia and Papillary Thyroid Carcinoma by Immunohistochemical Staining for Cytokeratin 19, Galectin-3, and HBME-1

Autor: Mary B. Casey, Ricardo V. Lloyd, Christine M. Lohse
Rok vydání: 2003
Předmět:
Zdroj: Endocrine Pathology. 14:55-60
ISSN: 1046-3976
DOI: 10.1385/ep:14:1:55
Popis: The histopathology of papillary thyroid hyperplasia and papillary thyroid carcinoma is similar enough to cause a diagnostic dilemma in a few cases. Both lesions may have papillary fronds with fibrovascular cores, nuclear crowding, and nuclear anisocytosis. Formalin- fixed paraffin-embedded tissues from 30 randomly selected patients with papillary thyroid hyperplasia and an equal number from patients with papillary thyroid carcinoma were analyzed for expression of cytokeratin 19 (CK19), galectin-3, and HBME-1. Cases of papillary thyroid carcinoma had moderate to strong CK19, galectin-3, and HBME-1 reactivity although both CK19 and galectin-3 showed positive staining in a significant number of nonneoplastic thyroid cases. HBME-1 was uncommon in the nonneoplastic cases. These results indicate that HBME-1 may be useful in helping to distinguish papillary thyroid carcinoma from hyperplasia in diagnostically difficult cases.
Databáze: OpenAIRE