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(A) Neck computed tomography (CT) showing prevertebral thickening with edema (white arrows). (B) Resolution of retropharyngeal swelling seen on follow-up CT 2 months later.
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Neck computed tomography (CT) revealed swelling of the retropharyngeal soft tissue (Fig. 1A). Two months later, the retropharyngeal edema on CT disappeared (Fig. 1B).