Odontogenic infections and descending necrotising mediastinitis: case report and review of the literature.

Descending necrotising mediastinitis is a rare complication secondary to oral surgery or odontogenic infections which ultimately spreads to the mediastinum through the anatomical cervical spaces. Delay in diagnosis, despite broad-spectrum antimicrobical therapy and extensive surgical intervention, results in an unacceptably high mortality rate (almost to 40%). A case study is presented as a rationale for a review of the current literature and to analyse the evolution in therapies, both medical and surgical from Pearse in 1938 to today.