Figure 3
Postoperative progress. (a) Preoperative neck CT angiography image. (b) CT image on postoperative day (POD) 3, showing improvement of the retropharyngeal abscess but recurrence of the posterior neck swelling. (c) MRI on POD 3, showing a lesion with low signal intensity on T1-weighted images and high signal intensity on T2-weighted images, and an area of low signal intensity surrounded by an area of high signal intensity on post-gadolinium images. (d) CT image on POD 7, showing slight asymmetry between the right and left sides of the neck. MEPN, meropenem; CLDM, clindamycin; CTRX, ceftriaxone; CDTR-PI, cefditoren-pivoxil.