[Diagnosis and treatment of 12 patients with deep neck infection and inferior mediastinal infection].

To summarize the clinical manifestations and treatment of patients with deep neck infection with descending mediastinal infection. The clinical data of 12 patients with deep neck infection with descending mediastinal infection were reviewed. The clinical manifestations, infection origin, bacterial culture results, related systemic diseases, surgical drainage methods and treatment results were analyzed. The typical clinical features of descending mediastinal infection were chest pain and subcutaneous crackling, diagnosis can confirmed by CT scan detected gas and abscess in the neck and mediastinal space. The main origin of infection was pharyngeal infection, followed by odontogenic infection. Systemic diseases were mainly diabetes mellitus. The positive rate of purulent secretion culture was 58.3%（7/12）, streptococcus account for the highest proportion. Surgical treatment included 9 patients undergoing neck surgery alone and 3 patients undergoing combined neck and chest surgery. Chest drainage was performed by thoracic surgery through mediastinoscopy or thoracoscopic surgery or B-ultrasound guided puncture, and no patient underwent open surgery. Ten patients were cured and two died, with a mortality rate of 16.7%. The deep neck infection with descending mediastinal infection has no specificity in the early stage. Timely abscess drainage, effective airway protection, antimicrobial therapy, and management of potentially life-threatening complications such as sepsis, mediastinitis, and pneumonia are the key to successful treatment.