摘要目的 探讨分析肺硬化性血管瘤(PSH)的CT及18F-FDG PET/CT影像特征,以提高诊断水平.方法 收集2012年5月～2014年7月以“肺占位性病变、性质待定”行手术且经手术病理证实为PSH的患者共12例(男2例,女10例,年龄24～80岁),对其影像学资料,包括胸部CT平扫、CT增强扫描以及18F-FDG PET/CT全身显像(5例)进行回顾性分析,分析PSH的影像学特征,探讨更有效的诊断方法.结果 12例患者中,9例为单发病灶(左肺4例,右肺5例),3例为多发病灶,其中1例为右肺下叶2个病灶,另2例为双肺多发病灶,可见病灶相贴或多发小病灶簇状分布.CT平扫示,病灶内部密度大致均匀,4例伴钙化,3例伴空气半月征.增强扫描示,病灶多数呈明显强化,个别病灶呈中度强化,8例均可见贴边血管征,6例可见囊变坏死.18 F-FDG PET/CT检查示,病灶呈轻～中度不均匀片状放射性摄取,SUVmax 2.2～4.0.结论 CT平扫及增强的多种表现对于PSH的诊断具有重要价值,18F-FDG PET/CT显像有助于病变良、恶性的鉴别诊断.

abstractsObjective To evaluate characteristics of CT and 18F-FDG PET/CT in pulmonary sclerosing hemangioma (PSH).Methods A retrospective study involving 12 patients (2 males,10 females;24-80 years old) confirmed as PSH by pathology from May 2012 to July 2014 was investigated.All patients underwent chest CT scan,including enhanced CT;and 5 cases underwent whole-body 18F-FDG PET/CT.All imaging data were collected and analyzed to find out a more effective diagnostic method.Results In 12 PSH patients,9 had single lesion,of which 4 involved left lung and 5 right lung.The rest 3 patients including 1 with two nodules located in the right lower lobe,and 2 with multiple nodules scattered in several lobes.Plain CT showed all lesions had uniformly isodensity,4 with calcification,3 with air meniscus sign.Contrast-enhanced CT examinations showed that the majority lesions were prominent enhancement and few moderate enhancement,all lesions showed vessel marginating sign and 6 with cystic and necrosis area.18F-FDG PET/CT examinations showed that the lesions displayed patchy pattern of mild to moderate uptake with SUVmax 2.2--4.0.Conclusions The characteristic CT features of PSH,especially the contrast-enhanced CT imaging,are important for diagnosis.18F-FDG PET/CT findings are extremely helpful in differentiating PSH from malignant lesions.