纵隔海绵状血管瘤CT诊断探讨

Diagnostic Study of Cavernous Hemangiomas of Mediastinum with CT

目的 探讨纵隔海绵状血管瘤 (CHM )CT诊断。方法 回顾分析 5例CHMCT表现 ,3例行增强扫描。结果 位于前、中、后纵隔各 1例 ,纵隔多区域累及 2例。肿块密度均匀 3例 ,密度不均 1例 ,静脉石并钙化 1例。 4例边缘光滑锐利 ,1例边缘模糊 ;2例动脉期增强扫描肿块无强化 ,另 1例动脉期不均匀中度强化 ,延迟扫描均匀强化。结论 CHM多发生在前、后纵隔 ,点状钙化和静脉石具特征性 。

Objective To investigate the imaging features and the diagnosis of cavernous hemangiomas of mediastium (CHM) in CT scan. Methods The computed tomographic imaging from five patients with CHM was analyzed retrospectively, contrast enhanced scans were performed in three patients. Results The location of the five cases with CHM was as following:one mass was in the posterior mediastinum, two involved multiple mediastinum, two lesions were occupied the anterior and middle mediastinum respectively.Four lesions were sharply marginated on CT scans, one diffusely infiltrated the mdeiastinum.Three masses were demonstrated homogenous attenuation. In one case, inhomogeneous increased attenuation was seen. Calcification was identified in one mase,contrast enhanced CT scans were available in three cases. During the arterial phase,two masses remained hypodense after adminastration of contrast material. In one case,the mass exhibited early intense contrast enhancement with inhomogenous attenuation pattern during the arterial phase, and demostratod homogenous attenuation on delayed scan. Conclusion CHM involves in the anterior or posterior mediastinal more frequently than in the middle. Calcification and phlebolithes are specific findings of the CHM at CT scans. Contrast enhanced CT scans can offer important diagnostic information.