Lateral neck radiography showing prevertebral soft-tissue swelling with forward displacement of the esophagus and trachea is most consistent with which condition?

Lateral neck radiography showing prevertebral soft-tissue swelling with forward displacement of the esophagus and trachea is most consistent with which condition?

• A. Retropharyngeal abscess
• B. Epiglottitis
• C. Meningitis
• D. Thyroiditis

Answer: (A)

Recognizing a deep neck infection in the retropharyngeal space on a lateral neck film is key. When the retropharyngeal space fills with pus from an abscess, the soft tissue behind the pharynx thickens and widens, and the airway structures in front of it (the esophagus and trachea) are pushed forward. That forward displacement of the airway along with posterior prevertebral swelling is the classic radiographic clue for a retropharyngeal abscess. This differs from epiglottitis, where the hallmark on a lateral view is an enlarged, swollen epiglottis (the thumbprint sign) rather than widening of the prevertebral space. Meningitis doesn’t produce this localized posterior-space widening on neck film, and thyroiditis would primarily cause anterior neck swelling from an enlarged thyroid rather than a posterior prevertebral collection. Clinically, retropharyngeal abscess is a true airway emergency and requires prompt airway assessment, CT with contrast to define the extent, and IV antibiotics with consideration of drainage if an abscess is confirmed.

Recognizing a deep neck infection in the retropharyngeal space on a lateral neck film is key. When the retropharyngeal space fills with pus from an abscess, the soft tissue behind the pharynx thickens and widens, and the airway structures in front of it (the esophagus and trachea) are pushed forward. That forward displacement of the airway along with posterior prevertebral swelling is the classic radiographic clue for a retropharyngeal abscess.

This differs from epiglottitis, where the hallmark on a lateral view is an enlarged, swollen epiglottis (the thumbprint sign) rather than widening of the prevertebral space. Meningitis doesn’t produce this localized posterior-space widening on neck film, and thyroiditis would primarily cause anterior neck swelling from an enlarged thyroid rather than a posterior prevertebral collection.

Clinically, retropharyngeal abscess is a true airway emergency and requires prompt airway assessment, CT with contrast to define the extent, and IV antibiotics with consideration of drainage if an abscess is confirmed.