目的 探讨多排螺旋CT对胸腺癌 的诊断价值。方法 回顾收集21例经病理 证实的胸腺癌患者的MSCT影像资料，参 照手术及部分随访结果，进行影像学分 析。结果 胸腺癌CT主要表现为前上纵隔 内占位，形态不规则或边缘有分叶，密 度不均匀，伴囊变坏死多见，与邻近结 构脂肪层消失，常侵犯周围组织并向远 处转移。结论 多排螺旋CT对胸腺癌的临 床诊断、确定手术方案及评价治疗效果 有重要价值。

Objective To explore the value of MSCT in the diagnosis of thymic carcinoma. Methods The CT data of 21 patients with the thymic carcinoma confirmed by pathology were analyzed retrospectively according to the surgical operation and some follow-up results. Results The mainly CT features of thymic carcinoma is the tumor in the upperanterior mediastinum, with irregular form or leaves in the edge, heterogeneous density, generally coexists with cystic or necrotic, the adipose layers of nearby structure disappear, often invades nearby tissues and distant metastasis. Conclusion MSCT has important value in the diagnosis, the choice of operation scheme and the evaluation of treatment of thymic carcinoma.