Cross-sectional Study to Determine the Diagnostic Accuracy of Cytokeratin-19 Immunomarker in the Diagnosis of Thyroid Malignancy with Histopathology as Gold Standard

CK-19 is a highly sensitive and specific immunomarker for distinguishing malignant thyroid nodules from benign ones, particularly in cases of PTC. The findings support the use of CK-19 as an adjunctive diagnostic tool in routine clinical practice to enhance the accuracy of thyroid cancer diagnosis and improve patient outcomes.