ELAVL1 and follicular thyroid adenoma: The same observation was made when comparing malignant tumours with either benign tumours (i.e., thyroid carcinomas versus follicular adenoma, mucoepidermoid carcinoma versus pleomorphic adenoma) [97, 100] or premalignant lesions (OSCCs versus dysplasia, verrucous carcinoma versus verrucous hyperplasia or verrucous borderline lesions) [69, 70], in which HuR staining pattern has been proposed as an additional diagnostic tool.