结论：降低吻合口张力，保证胸腔入口、主动脉弓后间隙宽畅是避免吻合口瘘发生的关键。
Conclusion: Relieving the tension of anastomosis, enlarging the outlet of thorax and the space posterior to aortic arch are key steps for preventing anastomotic fistula.
结论在CT上对胸腔出入口区合理的5区划分，有利于病变的定位和定性诊断，具有重要的临床应用价值。
Conclusion the 5 regions divided on CT anatomy of the thoracic outlet and inlet are very useful for the localization and definition in the diagnosis, which have important clinical value.
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