胸腺瘤的影像学诊断

Imaging Diagnosis of the Thymoma

目的 探讨胸腺瘤的影像学特征。方法 报告经手术与病理证实的胸腺瘤 72例 ,其中包括良性胸腺瘤32例 ,恶性胸腺瘤 2 7例和胸腺癌 13例。全部病例均有X线平片 ,其中做CT检查 37例 ,MRI检查 7例。结果 病变发生在前上纵隔占 87.4% ,肿瘤呈圆形或椭圆形占 6 8% ,多球状 4.2 % ,余为不规则形。肿瘤边缘呈小波浪状或结节状突起占 77.6 % ,肿瘤与心脏大血管接触面 (M CI)呈灌铸型占 48.6 %。结论 CT与MRI能清楚地显示胸腺瘤的各种病理改变 ,具有特征性表现 ,为其临床诊断提供可靠依据。

Objective To evaluate the imaging features of thymoma. Methods We reported 72 cases with thymoma proved by surgery and pathology, which included benign thymoma 32 cases, malignant thymoma 27 and thymic carcinoma 13.X ray plain films were performed in 72 patients, CT 37,MRI 7. Results 87.4% of thymoma located in the anterior upper mediastinum, tumors appearance as round or ovate shapes in 68% of cases ,multiple sphere shape 4.2%,remainders are irregular shape. The margin of tumors appearance as small wave or protruding nodular shape in 77.6%.The M CI of the tumors like cast type in 48.6%. Conclusion The pathological change in thymoma could be demonstrated by specific findings on CT and MRI, which proved a reliable modality in clinical diagnosis of thymoma.