摘要
目的分析肺硬化性血管瘤(PSH)的CT影像特征,加深对该病的认识,提高诊断准确率。方法经手术及病理证实的PSH患者22例,均行CT平扫和增强扫描。结果病变直径平均(3.0±1.4)cm,两下肺发病者占77%,19例为边缘光滑的类圆形或椭圆形结节,2例呈浅分叶,1例磨玻璃样改变。CT平扫4例病灶内见点状钙化,4例见点状略高或低密度灶,14例密度均匀,增强后病灶呈均匀或不均匀明显强化,灌注曲线为持续平台型;贴边血管征6例,周围晕征4例:空气新月征2例,尾征2例。结论PSH是一种少见疾病,临床症状不典型,与肺错构瘤、周围型肺癌、结核瘤等鉴别困难,CT增强扫描尤其是动态CT增强扫描对其诊断有较高价值,周围晕征伴空气新月征等影像特征有助于硬化性血管瘤的诊断。
Objective To analyze the CT features of pulmonary sclerosing hemangioma(PSH)and to improve the ability to diagnose this disease.Methods 22 cases of PSH confirmed by surgical resection and histopathology underwent plain CT and enhanced CT scan.Results Their mean long-axis diameter was(3.0±1.4) cm.Among all cases,17 cases located in the bilateral lower lobe of two lungs,19 cases were round or oval with smooth margin,and 2 cases were light lobulated.1 case showed ground glass opacity.6 cases showed vascular notch symptoms.The air meniscus sign and tail sign appeared in 2 cases,and the halo sign appeared in 4 cases.4 cases contained small nodular calcification and 14 cases showed homogeneous density.Under the enhanced CT scan,14 cases showed marked homogeneous enhancement and 8 cases showed intense and patchy heterogeneous enhanceement.Tumor enhancement curve in perfusion exam showed a continuous platform type.Conclusion PSH is a rare disease and the clinicalsymptoms are not typical.It is difficult to differentiate it form pulmonary hamartomas,peripheral lung cancer and tuberculoma.The enhanced CT scan,particularly dynamic enhanced CT scan,makes it possible to distinguish it from other nodules.The features associated with the halo sign and the air-meniscus sign around lesions have important value in diagnosis.
出处
《兰州大学学报（医学版）》
CAS
2014年第1期58-61,65,共5页
Journal of Lanzhou University（Medical Sciences）
