Surgical anatomy of mediastinum. Mediastinitis. chronic mediastinitis.

The mediastinum sits smack in the center of the chest. Laterally, it’s bordered by pleural sacs. On top, the thoracic inlet. Below, the diaphragm. It holds the heart, great vessels, trachea, esophagus, and major nerves. Basically, the VIP lounge of the thorax. Surgeons know it’s tricky. One wrong move and boom—complications.Traditionally, it’s split into four compartments. Superior, anterior, middle, posterior. Each has its own cast of characters. Superior? Aortic arch, veins, trachea, thymus. Posterior? Esophagus, descending aorta, azygos vein, thoracic duct. Easy enough in textbooks, right? But in real life, surgeons prefer imaging. The ITMIG scheme came in with three radiologic zones: prevascular (anterior), visceral (middle), paravertebral (posterior). CT landmarks make life easier. Helps plan biopsies, surgeries. Also, median sternotomy? Perfect for anterior and superior mediastinum. Posterolateral thoracotomy? Or VATS. Depends on where the problem is. And yes, mediastinal infections or masses? They need quick action.