Tumor invasion in trachea, esophagus, and carotid are the main reasons of palliative surgery. Local relapse is lethal.

气管、食管及颈总动脉受侵是姑息切除肿瘤的主要原因，局部复发是主要的死亡原因。

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Because the trachea and thyroid gland adjoin to the subglottic area, the tumor invades them along with the superior mediastinum and lung by the way of paratracheal lymph drainage.

以其和气管及甲状腺密接的解剖相关，常使肿瘤向下及向外侵犯，并借由气管旁淋巴组织转移到上纵膈腔及肺部。

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Objective To investigate the clinicopathologic characters of primary minor salivary gland tumor in the pharynx, larynx and cervical trachea.

目的探讨原发于咽、喉及颈段气管的小涎腺肿瘤的临床病理特点。

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