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目的：确定ＣＴ 图像上周围型肺癌之肺部阻塞性病变的诊断作用。方法：１８ 例周围型肺癌和１２ 例良性肺肿块对照者均经常规ＣＴ 扫描，绝大多数病人经肿块部位及其上下一层的深呼吸时相ＣＴ 扫描。结果：周围型肺癌的肺部阻塞性病变计有肺不张、阻塞性肺炎、阻塞性肺气肿及肺静脉癌栓。结论：注重ＣＴ 图像上周围型肺癌的各种肺部阻塞性病变，可为肺癌确诊提供重要的诊断依据。
Objective: To determine the diagnostic role of lung obstructive lesions in peripheral lung cancer on CT images. METHODS: Eighteen patients with peripheral lung cancer and 12 controls with benign lung masses underwent routine CT scans. The vast majority of patients underwent deep-breathing phase CT scans of the tumor site and its underlying layers. Results: Obstructive pulmonary lesions in peripheral lung cancer include atelectasis, obstructive pneumonia, obstructive emphysema, and pulmonary vein thrombosis. Conclusions: Paying attention to various lung obstructive lesions of peripheral lung cancer on CT images can provide important diagnostic evidence for the diagnosis of lung cancer.