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目的：评估 ＣＴ诊断良恶性胸腺瘤的价值。材料和方法：分析 ３１例经外科和病理证实的胸腺瘤的 ＣＴ表现。结果：良性胸腺瘤１０例，除１例与左肺动脉局部有粘连外，其余边界均清晰。侵袭性胸腺瘤１２例，胸腺癌９例，除１例鳞癌外，ＣＴ均为不规则肿块，血管间隙均受侵，前者心包受侵８例，胸膜受侵７例，后者心包受侵５例，胸膜受侵５例，肺转移４例，双肾上腺转移１例，胸骨破坏１例。结论。ＣＴ能准确鉴别良性恶性胸腺瘤，显示恶性胸腺瘤的浸润范围，并对侵袭性胸腺瘤和胸腺癌进行鉴别。
Objective: To evaluate the value of CT in the diagnosis of benign and malignant thymoma. Materials and Methods: CT findings of 31 cases of thymoma confirmed by surgery and pathology were analyzed. Results: In 10 cases of benign thymoma, except for one case with local adhesions to the left pulmonary artery, the other boundaries were clear. Invasive thymoma in 12 cases, 9 cases of thymus cancer, in addition to a case of squamous cell carcinoma, CT are irregular mass, the vascular gap were infiltrated, the former pericardial invasion in 8 cases, 7 cases of pleural invasion, the latter pericardial invasion 5 cases, pleural invasion in 5 cases, lung metastases in 4 cases, adrenal metastasis in 1 case, sternum in 1 case. in conclusion. CT can accurately identify benign and malignant thymoma, showing the extent of malignant thymoma infiltration, and invasive thymoma and thymus cancer were identified.