典型胸腺瘤平片和CT描述中英文对照
The frontal and lateral radiographs (images A and B) show a soft tissue density in the anterior mediastinum (image A, red arrow), with
obliteration of the retrosternal clear space (image B, red arrow). Correlated axial CT imaging shows a heterogenous mass is seen in the anterior mediastinum (images C and D, yellow arrows), including calcifications (image C, orange arrow).
正侧位胸片（图A和B）显示前纵隔软组织密度（图A，红色箭头），胸骨后间隙消失（图B，红色箭头）。 相关轴位CT图像显示在前纵隔（图C和D，黄色箭头）可见不均质肿块，其内可见钙化（图C，橙色箭头）。
Anterior Mediastinal Neoplasms主要鉴别点：
• Teratoma
Can have variable appearance
Mature teratomas show all three tissue densities: lipid, soft tissue, and calcification
• Thymic epithelial/thymoma
Often have cystic components as well as calcifications
Can be difficult to distinguish from a lipid-poor teratoma
• Lymphoma
Relatively homogenous soft tissue mass
Calcifications can be present if previously treated
Often does not displace vessels
• Thyroid
Direct extension or metastatic deposits
来源：Katherine J. Blair, M.D. and Emma C. Ferguson, M.D.Mediastinal Mass Mania! Radiographic and Cross-Sectional Correlation of Common Mediastinal Neoplasms.McGovern Medical School at University of Texas Health Science Center at Houston- Department of Diagnostic and Interventional Imaging
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