良性肺结节HRCT的影像特征

目的：用HRCT评价良性肺结节。方法：35例经手术病理或临床治愈证实的良性肺结节行HRCT扫描，观察其CT表现。结果：18例结核瘤中15例呈圆形或椭圆形，有长、短毛刺及环蛋壳状钙化者分别为13和14例，10例周围有纤维条索影或卫星播散病灶，7例增强扫描4例呈无强化，3例呈典型的包膜样强化。9例炎性假瘤均发生在两肺上叶前段或下叶基底段，6例结节呈圆形或类圆形，边缘可见长毛刺和胸膜凹陷征，3例周边可见斑片影及血管集束征，7例增强扫描6例呈良性肺结节的动态强化。3例错构瘤2例检出结节边缘砂粒样钙化和中央脂肪密度。2例肺脓肿均表现为圆形或类圆形中央低密度结节，增强扫描呈典型的周边环状强化。1例硬化性血管瘤周围可见受压小血管。1例肺霉菌球呈不规则形，有长毛刺及多个小空腔，周围有血管集束征及胸膜凹陷征。1例纤维瘤呈圆形，边缘光滑，密度均匀。结论：常见及少见良性肺结节进行HRCT扫描有助其定性诊断。

Iconography Feature of High-Resolusion Computer Tomography Scanning of Benign Pulmonary Nodules

Objective:To estimate benign pulmonary nodules with high-resolusion computer tomography(HRCT)scanning.Methods:Thirty-five cases of benign pulmonary nodule that were proven by pathology and clinical treatment were estimated with HRCT scanning,among them there were tuberculomas(n=18),inflammatory pseudotumors(n=9),hamartomas(n=3),pulmonary abscesses(n=2),pulmonary aspergillma(n=1),sclerosing hemangioma(n=1)and pulmonary fibroma(n=1).Results:In18cases of tuberculomas,15cases were round and the number of specula and ring-eggshell calcification of tuberculomas were13and14respectively.In7cases of tuberculomas examined with enhanced scanning,the number of nonenhancement and typical ringenhancement of tuberculomas were4and3respectively.In9cases of inflammatory pseudotumors,6cases were round and specula and the number of convergence sign of pulmonary vessels was3.In7cases of inflammatory pseudotumors examined with enhanced scanning,the number of dynamic enhancement of benign pulmonary nodules was6.In3cases of hamartomas,2cases showed central fat-densities.The low-density was found in the2cases of pulmonary abscesses.Round the sclerosing hemangioma,compression vessels were found.The specula,cavity,pleural indentation and convergence signs of pulmonary vessel were found in the pulmonary aspergillma.the pulmonary fibroma showed round and smooth.Conclusion:HRCT was a valuable method in diagnosis of common or rare benign pulmonary nodules.