结论：腹腔游离气体，腹腔游离积液、大网膜及肠系膜改变是腹腔中空脏器穿孔的主要CT表现。
Conclusion: the main CT signs of the hollow viscera perforation of the abdomen include free gas, free effusion and changes of the greater omentum and mesentery.
结论：腹腔游离气体，腹腔游离积液、大网膜及肠系膜改变是腹腔中空脏器穿孔的主要CT表现。
Conclusion: the main CT signs of the hollow viscera perforation of the abdomen include free gas, free effusion and changes of the greater omentum and mesentery.
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