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今后以类圆形小阴影为主的典型矽肺会减少,而临床上不规则形小阴影、游离SiO_2浓度低的迟发混合粉尘纤维化(MDF)类型则会增多,故以后者为主介绍病例如下: 病例1,男性,60岁,从事金属采矿14年,坑内保安15年,为典型矽肺病例,按ILO分类为3/3r。胸部平片见直径3mm的类圆形小阴影均匀密布于全肺野,下肺野稍有减少的倾向。未见矽肺特征性的肺门蛋壳样钙化。胸部CT片肺野部分横断面可见高度吸收的矽结节密布于血管间,背面胸膜下有多个大泡,而平片未能检出,CT对结节的检出率高。病例2,男性,56岁,从事铜矿坑内作业10年,制造活性炭18年,ILO分类为3/3s。胸部平片见有直径1.5mm的低密度类圆形小阴影密集分布于上肺野,属ILO分类1/2s。胸部CT中下肺野横断面可见高度吸收的类圆
In the future, the typical small silicate type of round small shadow will be reduced, while the clinical irregular small shadow, low free SiO2 concentration of delayed mixed dust fibrosis (MDF) type will increase, so the latter introduced mainly cases As follows: Case 1, male, 60 years old, engaged in metal mining for 14 years, pit security for 15 years, is a typical case of silicosis, according to ILO classification 3 / 3r. Chest plain film see the diameter of 3mm small circular uniform shadow in the whole lung field, lung field under the slightly reduced tendency. No characteristic silicosis of hilus eggshell calcification. Chest CT film lung field part of the cross-section can be seen highly absorbed silicon nodules densely arranged in the blood vessels, the back of the pleura there are multiple bullae, and plain film failed to detect, CT detection of nodules high. Case 2, male, 56 years old, working in a copper mine for 10 years, manufacturing activated carbon for 18 years and classifying the ILO as 3 / 3s. Chest plain film see the diameter of 1.5mm low-density round small densely distributed in the lung on the lung field, is an ILO classification 1 / 2s. Chest CT in the lower lung field cross-section shows a highly absorbed class circle