Abstract
Kawasaki disease is an idiopathic acute febrile illness prevalent among infants that primarily leads to small- and medium-sized arterial vasculitis. Reports on patients with Kawasaki disease and contrast neck CT showing retropharyngeal low-density area compatible with edema have surfaced. We described a case of a four-year-old boy with Kawasaki disease. On admission, he complained of severe neck pain and showed neck movement range limitations. We discovered retropharyngeal space and left para-pharyngeal low-density areas (the latter accompanied with peripheral enhancement) on the first contrast CT scan of his neck. We suspected retropharyngeal edema because of Kawasaki disease and a para-pharyngeal abscess. The retropharyngeal edema disappeared after IVIG and antibiotics therapy. On the contrary, the para-pharyngeal abscess shrank slightly but did not disappear. We continued with intravenous antibiotic therapy, and the neck pain and rigidity improved gradually. On the 19th day after admission, a third CT of the neck demonstrated disappearance of the abscess. On the 48th hospital day, we discharged the patient without any coronary artery sequelae.
