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Expression of proliferating cell nuclear antigen in follicular thyroid tumors: correlation with clinicopathological
Oncology Reports
|February 19, 1999
Abstract:
The purpose of this study was to correlate proliferating cell nuclear antigen (PCNA) immunostaining with clinicopathological findings in 60 follicular thyroid tumors. Mean proliferative index (PI) was significantly higher for carcinoma (73%) than microfollicular adenoma (19.6%) (p<0.0001). For atypical and oncocytic adenomas, intermediate PI values (64% and 50%) correlated with size and cytological atypia but not with sex and age. PCNA immunostaining is of limited value for differential diagnosis of malignant and atypical tumors but could be useful for identification of actively growing atypical follicular thyroid nodules on fine needle aspiration biopsies.