纵膈位于双侧胸腔之间,胸骨之后,脊柱侧面,上为颈部入口,下达膈肌。为了便于诊断和治疗,人为地将它分为上下前后四个区域。在这个区域里有心脏及出入心脏的大血管、食管、气管、胸腺、神经及淋巴组织等,所以它是重要生命器官的所在地。
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。
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.
后纵膈肉瘤罕见,大多数为神经源性肿瘤。
Sarcomas of the posterior mediastinum are rare and correspond mostly to neurogenic tumors.
肿瘤侵犯纵膈和包绕肺动脉,同时肺动脉可见狭窄。
The tumor invades the mediastinum and surrounds and Narrows the right pulmonary artery.
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