目的研究肝裸区与腹膜后间隙右份的通连关系，并对来源于右肝、肾上腺的较大肿块的CT定位诊断进行初步探讨。

Purpose To study the correlation between the right bare area of the liver (BAL) and the retroperitoneum, and the localization about organ origin of large mass in this region by CT.

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结论：掌握网膜囊上隐窝与肝尾状叶的位置关系对肝尾状叶周围的积液和肿块的诊断具有重要的影像学意义。

Conclusion: Mastering the positional relation of superior recess of lesser sac to caudate lobe of liver is essential to diagnose hydrops and masses involving caudate lobe of liver.

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下腔静脉肝段推移征诊断肝肾间巨大肿块来源于肝脏的敏感性86 .0 % ，特异性92 .6 % ，准确性89.7%。

The sensitivity, specificity and accuracy of IVCHSD sign for establishing the hepatic origin of the mass was 86.0%, 92.6% and 89.7%, respectively.

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