肺硬化性血管瘤的CT诊断

The CT diagnosis of pulmonary sclerosing hemangioma

目的探讨肺硬化性血管瘤(PSH)的CT表现及诊断价值。方法回顾性分析经穿刺活检及手术病理证实的肺硬化性血管瘤9例,对其CT表现和病理学特点进行分析。结果 9例中,按部位区分:左肺上叶2例,左肺下叶2例,右肺中叶4例,右肺上叶1例,均为单发病灶;按病灶形态区分:7例为结节状影,境界清晰,1例为长条状,1例为楔形影。CT平扫9例均呈软组织密度,1例边缘可见点状钙化,3例内部可见气体,呈空气新月征,其中3例行增强扫描,均明显强化,其中1例可见血管贴边征。结论肺硬化性血管瘤在CT平扫中具有良性肿瘤的普遍性特点,空气新月征及增强扫描对肺硬化性血管瘤的诊断有较高价值。

Objective To analyze the CT characteristic and diagnostic value of pulmonary sclerosing hemangioma （PSH）. Methods 9 cases pathologically proven PSH after biopsy or operation were included in this retrospective article. CT findings and pathology features were analyzed. Results All lesions were single. According to the parts distribution, there were 2 in superior lobe of left lung, 2 in inferior lobe of left lung, 4 in middle lobe of right lung, and 1 in superior lobe of right lung. According to the shape distribution, there were 7 nodules, 1 strip, and 1 wedge. A soft-tissue dense was presented on pre-contrast CT in all 9 lesions. Calcification was found in one lesion; air was found in 3 lesions（air trapping sign）. Obvious enhancement was found in all 3 enhanced scans. The vessels at its periphery sign was found in 1 lesion. Conclusion Universality of benign tumors was presented on CT plain scan in PSH. Air trapping sign and contrast enhanced scanning have a high diagnostic value for PSH.