Moreover, the protein expression of IL-6 was found to be significantly higher in patients with larger tumour size (χ2 = 4.270; r = +0.227; P = 0.039), in PTC patients showing capsular invasion of the tumours (χ2 = 4.360; r = +0.229; P = 0.037), and in those having extrathyroidal extension of tumours (χ2 = 5.032; r = +0.236; P = 0.025) in relation to their respective counterparts. Here, IL6 is linked to neoplasm.