PMC10391543_01
Timeline of key events, HD; hospital days.
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F1
The patient's clinical course is shown in Figure 1.
PMC10391543_02
(A,B) Contrast-enhanced CT showed retropharyngeal edema on the right side in an area of 17 mm x 14 mm x 34 mm indicated by arrows, edema appearing as a hypo-absorptive area in front of the vertebral body on C1 indicated by arrowheads, and bilateral tonsillar enlargement. (C,D) Follow-up contrast-enhanced CT scan at 14 days after discharge confirmed complete resolution of retropharyngeal edema and no sign of edema indicated by ovals.
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F2
Contrast-enhanced CT showed right posterior pharyngeal edema in an area of 17 mm x 14 mm x 34 mm, a hypo-absorptive area in front of the vertebral body on C1 suggestive of edema, and bilateral tonsillar enlargement (Figures 2A,B). CT scan 14 days after discharge showed complete resolution of retropharyngeal and posterior pharyngeal edema (Figures 2C,D). Consent for publication was obtained from patient and his guardians according to the institution's guidelines.