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目的 分析弥漫性泛细支气管炎 (DPB)的影像学表现 ,探讨其诊断意义。材料与方法 :报道 3例经病理证实DPB。着重分析CT尤其HRCT表现。结果 :DPB的主要HRCT征象 :( 1)小叶中心性结节弥散分布于双肺 ,结节间无融合趋势 ;( 2 )结节近侧端有“Y”字型或线状高密度影与其相连 ;( 3 )结节与胸壁有少许间隔 ;( 4 )小支气管扩张呈管状或环状 ,伴有管壁增厚 ;( 5 )病情进展时 ,结节间的气体贮留明显 ;( 6)结节影、线状影、高密度粘液栓影为可逆性 ,小支气管扩张为不可逆病变。结论 :DPB在中国可能并不罕见 ,影像学尤其CT/HRCT为DPB诊断的主要依据。
Objective To analyze the imaging findings of diffuse panbronchiolitis (DPB) and discuss its diagnostic significance. Materials and Methods: Three cases of pathologically confirmed DPB were reported. Emphasis analysis of CT, especially HRCT performance. Results: The main signs of HRCT of DPB were: (1) centrilobular nodules diffusely distributed in both lungs and there was no fusion between nodules; (2) there was “Y” shaped or linear high-density shadow at the proximal end of nodules (3) nodules and chest wall with a slight interval; (4) small bronchial tube was tubular or ring-like expansion, accompanied by thickening of the wall; (5) progression of the disease, nodular gas storage significantly; ) Nodules, linear shadow, high density mucus embolism is reversible, small bronchiectasis is irreversible lesions. Conclusion: DPB may not be uncommon in China. Imaging, especially CT / HRCT, is the main basis of DPB diagnosis.