The aims of this work were the retrospective analysis of a cohort of patients with acute mediastinitis treated at the authors' worksite over a 15-year period and the identification of factors that significantly affect the outcomes of the therapy. Methods: During the period 2006-2020, 80 patients with acute mediastinitis were treated. Within the cohort, the following were observed: the causes and the type of acute mediastinitis, length of anamnesis, comorbidities, diagnostic methods, time from the diagnosis to surgery, types and number of surgical procedures, results of microbiological tests, complications, and outcomes of the treatment. Results: The most common type of acute mediastinitis was descending mediastinitis (48.75%). A total of 116 surgical procedures were performed. Ten patients in the cohort died (12.5%). Patients older than 60 years were at a 6.8 times higher risk of death. Patients with more than two comorbidities were at a 14.3 times higher risk of death. The presence of yeasts in the culture material increased the risk of death by 4.4 times. Conclusion: Early diagnosis, removal of the cause of mediastinitis, sufficient mediastinal debridement, and multiple drainage thereof with the possibility of continual postoperative lavage are essential for the successful treatment of acute mediastinitis.

IntroductionIn spite of the progress in diagnosis and therapeutic options, esophageal perforation resulting in mediastinitis is a very serious condition with a high morbidity.AimTo evaluate the use of esophageal stents for the treatment of patients suffering from mediastinitis.Material and methodsRetrospective (2008–2012) analysis of a group of patients requiring surgical treatment. The evaluation was focused on the cause of perforation, stent type and its parameters, the surgical method used, duration of stenting and total length of treatment.ResultsIn total, 16 patients were treated by stenting. All patients were treated with the stent being placed across the defect in the esophagus. Mediastinitis was accessed and drained with the aid of a thoracotomy or thoracolaparotomy (8 cases), or using a combination of a laparotomy/laparostomy and pleural drainage (5 cases). The most basic interventions were either pleural or external cervical drainage (3 and 1 cases, respectively). One patient, in whom a stricture had developed at the healed perforation, was subjected to esophageal resection. Four patients died. The average period that the stent was left in situ was 53.7 days. The average period of hospitalization of those patients who survived was 53.4 days.ConclusionsUsing stents in therapy neither increased survival (mortality of 25%), nor decreased the length of therapy of patients once mediastinitis had developed. The main advantage of stenting is the preservation of the native esophagus and the reduced extent of surgical mediastinal drainage.

Highlights We present a unique case of a late complication after appendectomy. Histology showed attributes of the appendix wall, the muscularis propria was missing. A rare complication after appendectomy, according to our knowledge not published yet. A possible descriptive term might be a submucosal mucoid.