摘要
目的:探讨单发肺转移瘤(SPM)的瘤周X线影像表现及其诊断价值。方法:对比分析经病理证实的43例SPM和随机选择的70例单发周围型肺癌(PLC)和良性结节(SPN)的X线影像表现,采用双盲法观察所有病灶的近端和远端周围影像改变,并行χ2检验完成统计学处理,分析其形成机制。结果:SPM远端及部分近端瘤周肺组织较距瘤体更远部分肺组织透亮度明显增高,并且远端周围肺纹理与近端相比明显稀疏,这两种征象与PLC和良性SPN的表现相比,差异具有显著性意义(P<0.05);其原因主要与不同SPN其远端瘤周一定区域的通气/血流(V/Q)比值变化及肺间质的病理改变不同有关。结论:X线影像上SPM远端周围肺组织透亮度和肺纹理改变是一种可用于区分其它SPN的较有特征性的征象。
Objective：To study the peritumoral features of solitary pulmonary metastasis （SPM） on X-ray and CT images and to asses , their diagnostic value. Methods：The X-ray images were analysed in 43 pathologically proved patients with SPM and compared with 70 randomly selected patients with solitary peripheral lung cancers （PLC） and benign nodules. A double-blind method was used to observe the digital radiography （DR） and CT images of these lung lesions in the proximal and distal parts. Chi-square test was used for statistical analysis. Results： Increased rediolucency was observed at distal peritumoral area and also partial proximal area of SPM. Furthermore,marked rare faction of lung markings was found at the distal area of SPM. These two kinds of signs had significant difference （P〈0.05） comparing with that of PLC and the benign SPN＇s. The different performances between SPM and other SPN were related to the differences of the V（ventilation）/ Q（blood stream quantity） ratio in certain regions and pathologic changes of peritumoral lung tissue. Conclusion：The obvious radiolucency and ravefaction at distal site of peritumoral lung tissue are characteristic X-ray imaging features of SPM differing from other solitary pulmonary nodules （SPN）.
出处
《放射学实践》
2006年第10期1010-1014,共5页
Radiologic Practice
关键词
肺
肺转移瘤
放射摄影术
Lung
Pulmonary metastases
Radiography
