甲状腺囊腺瘤恶性变一例李云美患者男，６２岁。５年前发现右颈部包块，约拇指大小，表面光滑，活动良好，因无其他不适未做处理。５年来，包块渐增大，近时期增长较快。自感有压迫感。查体：右颈部肿块，约１４ｃｍ×１２ｃｍ大小，质中等，表面光滑，边界尚清，无压痛，... A case of malignant transformation of thyroid cystadenoma Li Yunmei male patient, 62 years old. Five years ago, the right neck mass was found to be about the size of the thumb, the surface was smooth, and the activity was good. No treatment was done because there was no other discomfort. In the past five years, the masses have gradually increased and have grown faster in the recent period. Self-inflation feels oppressive. Physical examination: right neck mass, about 14cm × 12cm size, medium quality, smooth surface, border is still clear, no tenderness, ...