摘要
目的 认识胸膜凹陷相关结节切迹 (NNPI)的征象。探讨CT多平面重建 (MPR)配合多层螺旋CT对恶性胸膜凹陷的诊断价值。方法 (1)观察病理证实的周围型小肺癌 (SPLC) 91例 ,良性小结节 5 9例。 9例SPLC、2例良性结节术后用改良Heitzman法充气固定肺叶制成病理大切片。比较分析良、恶性胸膜凹陷对照组及充气标本扫描和病理切片。 (2 )对恶性胸膜凹陷 2 0例、良性 12例行CTMPR ,观察MPR显示NNPI的作用。结果 (1)NNPI是指胸膜线影进入结节内部 ,于结节表面形成切迹改变。此征对恶性胸膜凹陷特异度为 96 5 %。 (2 )恶性胸膜凹陷切迹在MPR的检出率为 80 % ,与横断面扫描之间差异有显著意义 (χ2 =13 2 0 5 ,P <0 0 5 )。结论 NNPI对于恶性胸膜凹陷有高特异性诊断价值。MPR配合多层螺旋CT能提高此征检出率。
Objective To investigate the imaging finding,the pathologic bases,and the diagnostic value of nodule notch due to pleural indentation (NNPI),and to evaluate the potential role of multiplanar reconstruction (MPR) in the diagnosis of small peripheral lung cancer (SPLC) associated with pleural indentation (PI).Methods (1) 91 cases of SPLC and 59 cases of benign nodule confirmed by pathology were collected in this paper.A correlative study was done between the two groups.Eleven fresh lobectonic specimens from 9 cases of SPLC and 2 cases of benign nodule were collected.A correlative study to the preoperative CT scans,postoperative scans of the inflated specimens with the gross pathology of the specimens was done.(2) Twenty cases of SPLC and 12 cases of benign nodule,associated with PI,were collected in the study about MPR.Attention was focused on its role in showing NNPI.Results (1) NNPI was depicted as follows: On the position of the connection between the nodule and the line associated with PI,and a notch was shaped on the margin of nodule.The specificity of NNPI to malignant PI was 96.5%.(2) On MPR image,the occurrence of NNPI (80%) was higher than that on CT scans (χ 2=13.205,P <0.05).Conclusion Nodule notch due to PI has important value in the diagnosis of SPLC associated with PI.MPR combined with multi-slice CT is helpful to show NNPI.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2004年第3期259-262,共4页
Chinese Journal of Radiology
基金
北京市自然科学基金 (7992 0 16)
关键词
CT多平面重建
胸膜
多层螺旋CT
诊断
周围型小肺癌
Pleural
Lung neoplasms
Tomography,X-ray computed
Image processing,computer-assisted
