Objective: To investigate the relationship between the characteristics of promoter methylation of RASSF1A gene in papillary thyroid carcinoma (PTC) and the clinical manifestation of PTC.

• 摘要目的：探讨甲状腺乳头状癌及癌旁组织中RASSF1A基因启动子甲基化改变的特点与临床特征的关系。