摘要
目的探讨高位网膜囊上隐窝(HSOR)形成机制及多层螺旋CT(MSCT)多平面重组(MPR)表现。方法搜集MSCT横断位腔静脉裂孔(VCH)和食管裂孔(EH)发现囊状脂肪或水样密度影122例,获取亚毫米数据作MPR,分析其形态、大小、毗邻、与网膜囊连通关系及相关临床特点。结果 122例中脂肪密度影104例,水样密度影18例,位于VCH和EH的依次为58例、8例和46例、10例。其形态以半月形、类圆形或椭圆形为主,EH者显著大于VCH者。121例MPR直观显示其底部裂隙状脂肪或水样密度影与网膜囊相连及19例胃左动脉、2例VCH网膜小血管穿越膈肌裂孔,证实HSOR为SOR脂肪积聚或积液突入膈肌裂孔形成。HSOR临床诊断肝硬化及>50岁人群检出率显著增多,其腹部矢状径也显著增大(P<0.05)。结论 VCH和EH内半月形、类圆形及椭圆形脂肪或水样密度影、底部与网膜囊相连及网膜血管穿越膈肌裂孔为HSOR的MSCT MPR特征性表现;肥胖、肝硬化及高龄是其形成重要因素。
Objective To investigate the formation mechanism and MSCT MPR findings of high superior omental recess （HSOR）. Methods 122 cases of vena cava hiatus （VCH） and esophageal hiatus （EH） with fat or liquid density found in MSCT transverse section were collected. Sub millimeter data obtained for MPR restruction. The shape, size, adjacent structure, relations with omental bursa and clinical characteristics were analyzed. Results Of 122 cases, 104 cases were fat density, of which 58 cases located in VCH and 46 cases in EH; 18 cases were liquid density, of which 8 cases located in VCH and 10 cases in EH. The lesions were mainly semilunar, round or oval shape, the sac located in EH was signifi- cantly larger than that in VCH. The fissuring shaped fat or liquid density were connected with omental bursa in 121 cases. 19 cases of left gastric artery and 4 cases of omental small blood vessel through diaphragmatic hiatus were displayed intui- tively on MPR images, which confirmed HSOR was formed by the collection of fat or effusion of SOR into the diaphragmatic hiatus. The detection rate of HSOR increased significantly in patients with liver cirrhosis and older than 50 years old, and their sagittal diameter of abdomen increased significantly （ P 〈 0. 05 ）. Conclusion Semilunar, round and oval shaped fat or liquid density in VCH and EH, and its bottom connected with omental bursa and omental blood vessels through the diaphragmatic hiatus were the MSCT MPR features of HSOR. Obesity, liver cirrhosis and the advanced age were the important formation factors.
出处
《临床放射学杂志》
CSCD
北大核心
2014年第6期882-886,共5页
Journal of Clinical Radiology
关键词
网膜囊上隐窝
体层摄影术
X线计算机
多平面重组
Superior omental recess Tomography,X-ray computed Multi-planar reconstruction
