例1,女,29岁,主诉颈部包块逐渐增大10年。包块发现时约1×1cm~2,近2月颈部有异物感,无疼痛等症状。查体:眼球无突出,左侧颈部见凸起的包块,约4×4cm~2,表面光滑,无压痛,质中硬,随吞咽上下活动。手术见左侧甲状腺肿块为5×4×4cm~3, Example 1, female, 29 years old, complains that the mass of the neck gradually increases by 10 years. When the mass was found, it was about 1×1cm~2. There was a foreign body sensation in the neck in February and there was no pain or other symptoms. Physical examination: The eyeball is not prominent. The raised mass on the left side of the neck is about 4×4cm~2. The surface is smooth, without tenderness, hard in quality, and it moves up and down with swallowing. The operation shows that the left thyroid mass is 5×4×4cm~3.