气管前间隙指颈深筋膜中层前下部覆盖气管称气管前筋膜，此筋膜与气管颈部之间借疏松结缔组织连接形成气管前间隙。
结果表明，在颈部脏器的前方存在气管前间隙和舌骨下肌后间隙，在后方存在咽后间隙和危险间隙。
The results showed that the pretracheal space and the posterior infrahyoid space located in front of the viscera of the neck and the retropharyngeal space and the danger space behind it respectively.
在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。
At the level of azygos vein, 100% of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.
异物存留部位：胸锁乳突肌内6例，甲状腺内3例，气管旁1例，颈鞘旁2例，甲状软骨浅层3例，会厌前间隙1例。
Site: 6 cases in sternocleidomastoid muscle, 3 cases in thyroid, 1 cases in para tracheal, 2 cases near carotid sheath, 3 cases in superficial lamella, 1 case in pre-epiglottis space.
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