目的分析甲状腺病变的多层螺旋ct表现，探讨甲状腺良、恶性病变的诊断及鉴别诊断要点。
Objective To investigate the value of multi-slice helical ct in the differentiation of benign from malignant thyroid lesions.
目的：探讨三维彩色血管能量成像（3D -CPA）对判断甲状腺结节性病变良恶性方面有无意义。
Objective: To discuss whether 3D-CPA has meaning on judgement of benign or malignant of thyroid nodules lesion.
TTF蛳1在甲状腺常见良恶性病变中阳性率均高，特异地表达在细胞核，是一种特异的甲状腺滤泡细胞标志物。
TTF, 1 was expressed in the majority of benign and malignant thyroid diseases. The immnostaining of TTF, 1 was located in nuclear of cells, TTF, 1 was a sensitive marker for thyroid follicular cells.
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