Continued...

View Case N

Interpretation of Case N :

• Bony Alignment: Normal. Not able to see C7.
  
  
• Vertebral bodies and disk spaces: Normal sizes. Not able to see C7.
  
  
• C1-C2: Normal.
  
  
• Positioning: Neutral.
  
  
• Prevertebral space: Widened and bulging.
  
  
• Epiglottis: Image is very dark in this region. The prevertebral bulge is distorting this area. The epiglottis cannot be adequately visualized in this view.
  
  
• Subglottic airway size: Satisfactory. Impression: Retropharyngeal abscess.
  
  

View Case O

Interpretation of Case O :

• Bony Alignment: Abnormal. C2 is anterior relative to C3.
  
  
• Vertebral bodies and disk spaces: Normal sizes.
  
  
• C1-C2: Normal.
  
  
• Positioning: Flexion.
  
  
• Prevertebral space: Widened.
  
  
• Epiglottis: Difficult to see. Partially covered by the hyoid bone. Thin. The pre-epiglottic space is normal.
  
  
• Subglottic airway size: Normal. Impression: Pseudosubluxation. The widened prevertebral space may suggest hemorrhage
  secondary to an occult cervical spine fracture. However, in this instance, the widened prevertebral space is due to flexion
  positioning of the neck. Prevertebral soft tissue widening may be merely an artifact if the patient's neck is in flexion. In this case,
  both the pseudosubluxation and the widened prevertebral space would resolve if the radiograph was re-taken with the neck in extension.
  
  

View Case P

Interpretation of Case P :

• Bony Alignment: Normal. Not able to see C7.
  
  
• Vertebral bodies and disk spaces: Normal sizes. Not able to see C7.
  
  
• C1-C2: Normal.
  
  
• Positioning: Extension.
  
  
• Prevertebral space: Not widened.
  
  
• Epiglottis: Triangular. The pre-epiglottic space is slightly narrow, but it is deep and well preserved.
  
  
• Subglottic airway size: Narrowing noted. Impression: Subglottic edema. Croup.