多种疾病可以引起肺部多发结节性改变 ,多发的结节可以在肺内散在分布 ,可以沿支气管血管束或淋巴管分布 ,也可以分布于小叶中心。不同疾病引起的多发结节的改变各有其分布特点 ,因此正确分析肺部多发结节的分布规律 ,并结合其它相应的影像学改变 ,对提出影像学诊断是有一定帮 Multiple diseases can cause multiple nodular pulmonary changes, multiple nodules can be scattered in the lungs, along the bronchial vascular bundle or lymphatic distribution, can also be distributed in the center of the leaflets. Multiple nodules caused by different diseases have their own distributional changes, so the correct analysis of the distribution of multiple pulmonary nodules, combined with other corresponding changes in imaging, the proposed imaging diagnosis is a certain help