目的 :评价CT对甲状腺恶性肿瘤的诊断价值。方法 :回顾分析了 30例经手术病理证实的甲状腺恶性肿瘤的CT征象。结果 :30例甲状腺恶性肿瘤的CT表现为形态不规则或类圆形的低密度区 ,密度均匀或不均匀 ,瘤壁不规则和不光整 ,通常伴有坏死(6 30 ) ,囊性变 (2 30 ) ,钙化 (6 30 ) ,淋巴结肿大 (18 30 )和浸润到周围组织。CT能正确地显示肿瘤的侵犯程度。比如 ,气管受压 (6 30 ) ,气管食管沟浸润和向纵隔内延伸 (8 30 ) ,局部皮肤浸润 (2 1 30 ) ,颈动脉鞘受侵犯 (12 30 ) ,颈部淋巴结和颈部肌肉融合不清 (8 30 )。两例囊腺癌增强扫描见囊壁和瘤结节增强 ,形成“靶眼”征象。结论 :CT对甲状腺恶性肿瘤诊断具有很大的价值。术前应用CT扫描可以明确病变的范围及进行术前评价和分期 Objective: To evaluate the diagnostic value of CT in thyroid malignancy. Methods: The CT signs of 30 cases of thyroid malignancies confirmed by surgery and pathology were retrospectively analyzed. RESULTS: CT findings of 30 cases of thyroid malignancies were irregular or round-shaped low-density areas with uniform or uneven density. The wall of the tumor was irregular and irregular, usually accompanied by necrosis (6 30 ), cystic degeneration ( 2 30), calcification (6 30), lymphadenopathy (18 30 ), and infiltration into surrounding tissues. CT can accurately show the extent of tumor invasion. For example, tracheal compression (6 30 ), tracheo-oesophageal groove infiltration and extension into the mediastinum (8 30 ), local skin infiltration (2 1 30 ), carotid sheath invasion (12 30 ), cervical lymph node and neck muscles Unclear integration (8 30). Two cases of cystic adenocarcinoma enhanced scans showed enhanced cystic wall and nodular nodules, resulting in “target eye” signs. Conclusion : CT has great value in the diagnosis of thyroid malignancy. Preoperative CT scan can be used to define the extent of the lesion and perform preoperative evaluation and staging