Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
(2)
中胸痛症状的比例较青低，而阻塞性肺炎或肺不张等合并症
；
Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
(2)中胸痛症状的比例较青低，而阻塞性肺炎或肺不张等合并症；
(2)
中胸痛症状的比例较青低，而阻塞性肺炎或肺不张等合并症
；
Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
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