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急性纵隔炎常由牙源性或颈深部感染所致。或称为下行性坏死性纵隔炎（ＤＮＭ）。发病时感染沿颈筋膜迅速扩散，有时因未能及时诊断而延误治疗。为了提高对其认识，对１９８３～１９９５年间收治的５例ＤＮＭ患者进行回顾性分析。２例由牙源性感染所致，由气管插管损伤咽后壁及
Acute mediastinitis often caused by dental or deep neck infection. Or known as destructive necrotizing mediastinitis (DNM). Infection along the rapid spread of cervical fascia, sometimes delayed diagnosis due to failure to treat. In order to improve their understanding, we retrospectively analyzed 5 DNM patients admitted from 1983 to 1995. 2 cases caused by odontogenic infection, tracheal intubation damage pharyngeal wall and