Acute Acute<unk>  can be confirmed by contrast x-rays since most cases of acute<unk>  are due to esophageal perforation. Other studies that can be used include endoscopic visualization, Chest CT scan with oral and intravenous contrast. With regards to CT Imaging, the extent of involvement of the mediastinum can be evaluated. Therefore, acute<unk>  can be classified into three categories: # diffuse<unk>  # isolated mediastinal abscess #<unk>  or mediastinal abscess complicated by empyema or subphrenic abscess. Chronic Most cases of granulomatous<unk>  (75%) are incidentally found on chest x-rays which show a mediastinal mass, or widening of the mediastinum.
Mediastinitis
Tonsillitis
Bronchitis
Tracheal tumor
Tracheitis
Lung abscess
Croup
Tracheobronchitis