论文部分内容阅读
目的通过对多层螺旋CT(MSCT)常规层厚和薄层重组图像特征的分析,探讨其对肺淋巴管肌瘤病(PLAM)的影像诊断价值。资料与方法经肺组织活检病理证实的PLAM4例,均为女性,年龄28~62岁;采用16层螺旋CT扫描仪常规扫描层厚10mm,探测器开放1.25mm×8,横轴面薄层重组和冠状面、矢状面多平面重组(MPR)图像层厚1.3mm。结果双肺弥漫分布大小不等的类圆形囊腔影,常规层厚图像显示囊腔影的径线2~35mm,较小的囊腔影不能显示明确的薄壁,薄层重组和MPR图像显示囊腔影薄壁明确,壁厚<2mm,囊壁上明确可见散在的血管断面影和血管穿插其中。1例伴有右侧胸膜腔少量积液,4例均不伴有其他部位淋巴管肌瘤改变。结论MSCT常规层厚图像发现可疑囊性病变,需进行薄层重组和MPR,对于弥漫分布的,厚度<2mm的薄壁囊肿,其囊壁内见到小血管穿插其中,应高度怀疑PLAM的可能。
Objective To investigate the diagnostic value of PLAM in the diagnosis of pulmonary lymphangiomyoma (PLAM) by analyzing the features of MSCT common slice and thin-layer reconstructed images. Materials and Methods 4 cases of PLAM confirmed by biopsy of lung tissue were female and aged 28 to 62 years old. The thickness of the layer was 10mm by conventional 16-slice spiral CT scanner, and the detector was opened 1.25mm × 8. And coronal, sagittal plane planar reconstruction (MPR) image layer thickness of 1.3mm. Results The diffuse size distribution of the two lungs was similar to that of the circular cyst cavity. Conventional layer thickness images showed a diameter of 2 ~ 35 mm. The smaller cyst shadow did not show definite thin wall, thin layer reorganization and MPR images Cyst cavity showed thin walls clear, wall thickness <2mm, clearly visible on the wall of the scattered blood vessels cross-section and blood vessels among them. One case was accompanied by a small amount of pleural effusion on the right, 4 cases were not associated with other parts of the lymphatic myoma change. CONCLUSION: Suspicious cystic lesions are found in conventional MSCT images. Thin-layer reconstruction and MPR are required. For diffusely distributed thin-walled cysts less than 2 mm in thickness, small blood vessels may be found in the cystic wall, and PLAM should be highly suspected .