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In the Name of GOD

Learn about the imaging modalities and findings of mediastinitis, pneumomediastinum, and hydrothorax associated with dental infections. Explore the various spaces and structures involved, along with the signs and diagnostic criteria for these conditions.

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In the Name of GOD

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  1. In the Name of GOD

  2. Mediastinitis

  3. Esophageal Rupture

  4. Hydrothorax

  5. Gastrografinextravasation

  6. Pneumomediastinum

  7. T1-weighted axial MRI demonstrating paratracheal soft tissue mass that invades into the SVC

  8. Same patient’s MRI with different technique to further define the intramural mass

  9. Dental Infections • Usually mandibular, usually molar • Submedialpterygoid space • Floor of mouth • Anterior visceral space • Parapharyngeal space • Neurovascular bundle • Retropharyngeal space

  10. PNEUMOMEDIASTIUM • Usually from ruptured alveoli. • Can also be from trachea, bronchi, esophagus, bowel and neck injuries.

  11. PNEUMOMEDIASTINUM: Signs • Linear paratracheallucencies • Air along heart border • “V” sign at aortic-diaphragm junction • Continuous diaphragm sign

  12. PNEUMOMEDIASTINUM:Paratracheallucencies

  13. PNEUMOMEDIASTINUM: Continuous diaphragm sign

  14. PNEUMOMEDIASTINUM: CT

  15. Pneumopericardium • Causes: penetrating trauma • Rare

  16. Trachea/bronchi injuries • Tears occur within 2cm of carina • Persistent pneumothorax • Large pneumomediastinum • “Fallen lung”

  17. 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.

  18. But for now, GOODBYE

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