局部受压处气管软骨环消失2例，气管软骨环变细、变薄、变软34例。
The compressed tracheal cartilage disappeared in 2 cases, became thin and soft in other 34 cases.
剑鞘气管的形成是由于慢性咳嗽所致气管软骨环的损伤、重塑型和营养不良性骨化。
The formation of saber sheath trachea is caused by the injury of the tracheal cartilage due to chronic coughing, resulting in remodeling and dystrophic ossification of the cartilage.
方法：按气管软骨环的形状制备模具，将聚乙醇酸无纺网置于模具中，用聚乳酸塑形；
Methods : PGA non woven mesh was put into the mold of trachea cartilage ring and enforced with polylactic acid.
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