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目的:研究胸腺瘤与前纵隔(血管前间隙)淋巴瘤的MSCT表现,提高对二者的诊断与鉴别诊断能力。方法:回顾性分析经手术病理证实的30例胸腺瘤与18例血管前间隙淋巴瘤MSCT表现,着重观察肿瘤的密度、形态及其与周围结构的关系。结果:30例胸腺瘤中,24例良性胸腺瘤与邻近大血管分界清晰,肿块表现“D”字或反“D”字状,平扫CT值16～59 Hu,增强CT值20～110Hu;6例侵袭性胸腺瘤边界不清,呈分叶状、不规则形,密度不均,平扫CT值23～42 Hu,增强CT值23～60 Hu。18例淋巴瘤中,单发于前上纵隔者6例,其余12例呈多结节、肿块状,侵入血管间隙生长,致大血管受压,增强扫描呈轻度强化,常伴有其它部位淋巴结增大。结论:MSCT能清晰显示胸腺瘤与前纵隔淋巴瘤的影像学表现特征,并能有效提高对二者的鉴别诊断。
Objective: To study the MSCT manifestations of thymoma and anterior mediastinum (anterior vascular space) lymphoma and to improve their ability of diagnosis and differential diagnosis. Methods: A retrospective analysis of 30 cases of thymoma confirmed by surgery and pathology and 18 cases of anterior clearance lymphoma MSCT performance, focusing on the tumor density, morphology and its relationship with the surrounding structure. Results Thirty cases of thymoma had a clear demarcation between adjacent thoracic and benign thymoma. The mass showed “D” or “D” shape, with a CT value of 16-59 Hu and enhanced CT value 20 ~ 110Hu; 6 cases of invasive thymoma border is unclear, lobulated, irregular, uneven density, CT scan value of 23 ~ 42 Hu, enhanced CT value of 23 ~ 60 Hu. 18 cases of lymphomas, solitary in the anterior superior mediastinum in 6 cases, the remaining 12 cases were nodular, mass-like, invaded the vascular gap growth, resulting in large vessel compression, enhanced scan showed mild enhancement, often accompanied by other parts Lymph nodes increase. Conclusion: MSCT can clearly show the imaging features of thymoma and anterior mediastinal lymphoma, and can effectively improve the differential diagnosis between the two.