;
后的;Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
(2)老年组中胸痛症状的比例较青年组低，而阻
炎或不张等合并症多见；
不张，萎陷Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
(2)老年组中胸痛症状的比例较青年组低，而阻炎或不张等合并症多见；
(2)老年组中胸痛症状的比例较青年组低，而阻
炎或不张等合并症多见；
Thoracalgia was less common in elder patients, while obstructive pneumonia and atelectasis was more.
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