五、纵隔肿块性病变的鉴别(定位)要点纵隔肿块性病变X线诊断中的最后一环是定性问题。X线医生不仅要确定病变的所在位置,而且要提出病变的可能性质,提供临床医生参考,协助制定合理的治疗计划,避免不必要的探查手术。可供定性时参考的依据,有以下几项: Fifth, the identification of mediastinal mass lesions (positioning) points The final step in the diagnosis of mediastinal mass lesions is qualitative. X-ray doctors should not only determine the location of the lesion, but also suggest the possible nature of the lesion, provide clinicians with a reference, assist in the development of a reasonable treatment plan, and avoid unnecessary exploration operations. The basis for reference for qualitative analysis is as follows: