Background and Objective: Papillary thyroid carcinoma (PTC) is the most common thyroid malignancy. Expression of BCL-2, an apoptosis inhibitor, is higher in papillary thyroid carcinoma cells. Prognosis of PTC is associated with some factors such as age, gender, tumor size, capsular invasion and lymph node involvement. The aim of this study was to demonstrate relation between BCL-2 oncoprotein e...