Method 157 patients with lung mass shadow were divided into three groups, centre, peripheral and the rest group.
方法对157例临床上疑为肺肿瘤的住院病人，依据胸片上肺部块影部位及形态分为中央型、周围型和其它型。
Method 157 patients with lung mass shadow were divided into three groups, centre, peripheral and the rest group.
方法对157例临床上疑为肺肿瘤的住院病人，依据胸片上肺部块影部位及形态分为中央型、周围型和其它型。
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