甲状腺恶性肿瘤的CT诊断价值

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例经手术和病理证实的甲状腺恶性肿瘤的CT征像。结果30例甲状腺恶性肿瘤的主要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，瘤壁不规则和不光滑，伴有坏死（例）、囊性变（2例）、钙化（6例）和淋巴结肿大（18例）。CT能正确地显示肿瘤向四周侵犯的程度。比如，气管受压（6例），气管食管沟浸润和纵隔延伸（8例）局部皮肤浸润（21例）颈动脉鞘受侵犯（12例）、颈癌部淋巴结和颈部肌肉融合不清（8例），结论CT对甲状遥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临床术前评价和分期。

Diagnostic Value of CT in Thyroid Malignancies

Objective To evaluate the diagnostic value of CT in thyroid malignancies.Methods CT findings in 30 patients with thyroid malignancies confirmed by pathologic study were analyzed retrospectively.Results CT feature appeared as a low dense areas with homogeneous or inhomogeneous in 30 thyroid malignancies.Their shape tended to be irregular or ovoid;their walls were irregular appearance and uneven.It often accompanied by necrosis(6 cases),cystic degeneration(2 cases),calcification(6 cases),lymph nodes enlarge(18 cases).The extension of tumor invasion was correctly showed by CT scan.Such as,trachea compressed(6 cases),ditch of trachea and esophagus infiltrated and extended into mediastinum(8 cases),respectively.Region skin infiltrated(21 cases),carotid sheath invaded(12 cases),contours of cervical muscle and lymph nodes were poorly defined(8 cases).Conclusion CT scan has significant value in the pre operation differential diagnosis.Application of CT may provide an excellent anatomical road map of the local,regional and extent of thyroid malignancies for pre surgical assessment and staging.