作者在分析114例外围型球型肺癌的X 线像时,发现外围型肺癌也常有不同程度的阻塞性肺不张存在(占71%)。其X 线表现为阻塞性小段完全性肺不张、阻塞性小段不完全性肺不张(慧星征)、叶间胸膜移位和小S 屈曲等改变。这些征象对鉴别肺部良恶性球形肿块有较大价值。 When analyzing the X-ray images of 114 cases of peripheral pulmonary type lung cancer, the authors found that peripheral type lung cancer also often has different degrees of obstructive pulmonary dilation (71%). The X-ray manifestations include obstructive small segment complete atelectasis, obstructive segmental incomplete atelectasis (visceral sign), interpleural pleural shift, and small S flexion. These signs are of great value in distinguishing benign from malignant lung masses.