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In the Name of GOD. Mediastinitis. Esophageal Rupture. Hydrothorax. Gastrografin extravasation. Pneumomediastinum. T1-weighted axial MRI demonstrating paratracheal soft tissue mass that invades into the SVC. Same patient’s MRI with different technique to further define the intramural mass.
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T1-weighted axial MRI demonstrating paratracheal soft tissue mass that invades into the SVC
Same patient’s MRI with different technique to further define the intramural mass
Dental Infections • Usually mandibular, usually molar • Submedialpterygoid space • Floor of mouth • Anterior visceral space • Parapharyngeal space • Neurovascular bundle • Retropharyngeal space
PNEUMOMEDIASTIUM • Usually from ruptured alveoli. • Can also be from trachea, bronchi, esophagus, bowel and neck injuries.
PNEUMOMEDIASTINUM: Signs • Linear paratracheallucencies • Air along heart border • “V” sign at aortic-diaphragm junction • Continuous diaphragm sign
Pneumopericardium • Causes: penetrating trauma • Rare
Trachea/bronchi injuries • Tears occur within 2cm of carina • Persistent pneumothorax • Large pneumomediastinum • “Fallen lung”
Systemic Venous Air Embolism • Tears in airspaces with resulting communication with veins; or outside access to systemic veins • Often lethal: Air block in heart or coronary, cerebral, mesenteric, peripheral arteries.