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Case 103 

Case 103
Case 103

Ellen Chung

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date: 18 January 2021

11-month-old with fever and dysphagia.

Lateral soft-tissue neck radiograph (left) shows thickening of the retropharyngeal soft tissues (asterisk).

Axial intravenous contrast-enhanced CT image (right) shows a well-defined, hypoattenuating mass (arrow) with rim-like, peripheral enhancement.

The main differential consideration is retropharyngeal cellulitis, which is a deep infection requiring intravenous antibiotics, but which is treated medically, while retropharyngeal abscess usually requires surgical drainage. Cellulitis appears as soft-tissue thickening with hypoattenuation on CT due to edema, but without a fluid-attenuating mass with enhancing wall as seen with abscess....

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