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。
2
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.