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目的 研究纵隔胸腺瘤的ＣＴ 征象，诊断与鉴别。方法 报告经手术与病理证实的纵隔胸腺瘤３７ 例，其中男性２５ 例，女性１２ 例，年龄为１２ ～６４ 岁，平均３４１ 岁。手术与病理证实：良性胸腺瘤８ 例，恶性胸腺瘤１８ 例，胸腺癌７ 例，胸腺脂肪瘤３ 例，胸腺脂肪肉瘤１ 例，全部病例均有胸部Ｘ 线正侧位片，其中２０ 例作了ＣＴ 检查。结果 病变位于前纵隔３４ 例，其中波及中后纵隔７ 例；中后纵隔３ 例，病变突向单侧３３ 例，双侧４ 例，圆形和椭圆形２２例，不规则形１３ 例，多结节状２ 例，胸腺瘤的ＣＴ 值为２１ ～４５Ｈｕ。肿瘤与纵隔接触面呈灌铸型２８ 例，占７５７ ％ 。结论 ＣＴ 对胸腺瘤的定性诊断有较高价值。
Objective To study the CT signs, diagnosis and identification of mediastinal thymoma. Methods 37 cases of mediastinal thymoma confirmed by operation and pathology were reported, including 25 males and 12 females, aged 12 to 64 years, with an average of 34 years and 1 year. Surgery and pathology confirmed: 8 cases of benign thymoma, 18 cases of malignant thymoma, 7 cases of thymic carcinoma, 3 cases of thymic lipoma and 1 case of thymic liposarcoma. All cases had positive X-ray radiographs, of which 20 cases were performed. CT examination. Results The lesions were located in 34 cases of anterior mediastinum, including 7 cases of mediastinal and posterior mediastinum; 3 cases of posterior mediastinum, 33 cases of unilateral lesions, 4 cases of bilateral lesions, 22 cases of round and oval, and 13 cases of irregular shape. In 2 cases of nodularity, the CT value of thymoma was 21 to 45 Hu. The tumor and mediastinum contact surface was cast in 28 cases, accounting for 75.7%. Conclusion CT is of high value for the qualitative diagnosis of thymoma.