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