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外源性类脂肺炎少见,多因吸入食物中的矿物、植物或动物油,对比剂及油性药物所致。作者报道了3例,均有因鼻炎用油剂滴鼻史。2例病人的胸片示两肺有模糊影,在薄层CT上有两侧斑片状,边缘清楚的毛玻璃影并重叠有增粗的小叶间隔;1例病人的胸片示右下肺实变,在薄层CT上有右肺基底部毛玻璃影并有网影重叠。3例均形成碎石路样表现。病理检查显示,毛玻璃影和增厚的肺小叶间隔代表扩张的肺泡壁和间质,其内含有大量充满脂质的巨噬细胞,并伴有类脂物沉积,炎症细胞浸润和
Exogenous lipid pneumonia is rare, mostly due to inhalation of food minerals, plant or animal oils, contrast agents and oily drugs. The authors reported in 3 cases, both due to rhinitis oil drops nasal history. The chest radiographs of 2 patients showed blurring of the two lungs, patchy flanks on both sides of the lamina CT, clear fringe glassy edges and thickening of the interlobular septum. One patient’s chest radiograph showed consolidation of the right lower lung , In the thin layer CT there is a base of the right lung base frosted glass shadow and shadow overlap. 3 cases were formed gravel road-like performance. Pathological examination showed that gross glassography and thickened lung lobules represent an expanded alveolar wall and interstitium containing a large amount of lipid-laden macrophages with lipid deposition, inflammatory cell infiltration and