肺部良性肿块的CT表现

CT Features of Benign Pulmonary Nodules

目的是分析肺部良性肿块的ＣＴ表现，探讨病变的鉴别诊断。方法用１０例病人中，硬化性血管瘤１例，孤立性肺囊肿２例。１０例均行常规胸部ＣＴ扫描，其中８例行增强扫描。结果得到硬化性血管瘤边缘光滑锐利，密度致密均匀；增强扫描强化特别明显。错构瘤呈爆花米样钙化或梅花瓣样钙化，呈浅分叶状，可有血管连接征。曲菌球，２例在空洞内呈游离状态。１例菌球占满空腔里分叶状，形似肺癌，但增强扫描无强化。２例肺隔离症分别位于两下肺后基底段，类似半月形软组织密度阴影，凸面靠后纵隔和后胸壁。肺囊肿呈椭圆形水样密度阴影。结论是肺良性肿块影像学参数容易诊断；少数较难，ＣＴ对其鉴别诊断是一种有效手段，增强ＣＴ扫描尤为重要。

Purpose:To analysis the CT features and differentiations of benign pulmonarynodules .Materials and Methods: 10 Patients were examined with CT, including sclerotic hemangioma(1 case),harmartomas(2 cases),and solitary pulmonary cysts(2 cases).8 cases were performed withcontrast agent .Results: Sclerotic hemangioma demonstrated smooth margin, homogenous densityand marked enhancement. Hamartomas showed pop-com like calcification with lobulations andvesicular connection signs. Fungus ball demonstrated cavitation, Without enhancement.Bronchopulmonap sequestrations showed soft tissue masses, often located on back-base segment ofboth inferior lobes. Pulmonary cysts showed oval, water density shadow. Conclusion: Most of thepulmonary nodules were easy to diagnose. But some were difficult. CT, especially the contrastenhanced CT scanning was an effect method to differentiate.