纵隔海绵状血管瘤的影像学表现与病理对比分析(附4例报告)

Comparative analysis of imaging findings and pathology of cavernous hemangioma of mediastinum(4 cases report)

目的:分析纵隔海绵状血管瘤(CHM)的影像学表现,探讨影像诊断特征。方法:回顾分析4例CHM的影像学表现,4例均行Force CT增强扫描并进行各种CT后处理重建,其中1例做了MRI检查。结果:肿瘤位于前、中、后纵隔及纵隔多区域累及各1例。3例密度不均,CT发现静脉石;1例密度均匀,MRI图像显示肿块内流空血管。3例边界清楚,1例边界不清。4例增强扫描动脉期轻度不均匀强化,延迟扫描进一步强化,其中2例呈血管湖样强化,4例均可见异常引流静脉。结论:CHM CT增强扫描呈渐进性强化,多见血管湖样强化,伴有静脉石及异常引流静脉具有影像诊断特征;T2WI脂脏抑制序列呈高信号较具特征性。

Objective: To investigate and discuss the imaging features of cavernous hemangiomas of mediastium (CHM). Methods: The CHM images of four patients who underwent force CT enhanced scan were retrospectively analyzed, and then showed the direct signs of the disease through various CT post-processing reconstruction techniques. One of them underwent magnetic resonance imaging. Results: The mass was located in the anterior, middle, posterior mediastinum and mediastinal multiregion, each containing one case. Three lesions were unevenly distributed, and calcification or vein stone was found by CT scanning. One was homogeneous, and flow void of the vessels was identified by MRI examination. The boundary is clear in three cases, and the boundary of one case is unclear. In four cases of CT enhanced scan, mild inhomogeneity was enhanced and delayed scan was further enhanced, of which two cases were enhanced by vascular lake like, and abnormal drainage veins were found in four cases. Conclusion: The CT enhancement scan is of great value and the post-processing technique can show more details for CHM lesions. CHM image characteristics can be summarize as delayed enhancement, with calcification or vein stone, abnormal drainage vein, and vascular lake enhancement. T2WI fat suppression image is characterized by high signal.