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  • Title: Accuracy of computerized tomography in deep neck infections in the pediatric population.
    Author: Vural C, Gungor A, Comerci S.
    Journal: Am J Otolaryngol; 2003; 24(3):143-8. PubMed ID: 12761699.
    Abstract:
    OBJECTIVES: Computerized tomography (CT) is used widely to diagnose deep neck infections (DNIs), and, generally, the decision of surgical intervention is based on findings of a CT study. This study examines the accuracy of CT in differentiating abscess versus cellulitis in DNIs (lateral pharyngeal and retropharyngeal). STUDY DESIGN: This is a retrospective chart review study with re-evaluation of the CT scans by a blinded observer. METHODS: A retrospective review of medical records of 80 patients with DNIs who were evaluated with a CT study was performed. CT scans of these patients were reviewed by a radiologist who was blinded to the clinical and surgical findings and to the original CT study report. To diagnose the infection and differentiate abscess from cellulitis, our radiologist scored the CT scans regarding the following variables: low-density core, rim enhancement, soft-tissue swelling, obliterated fat planes, and mass effect. Radiologic diagnosis was compared with operative findings (whether pus found at surgery or not) in all cases treated surgically. Accuracy, sensitivity, specificity, and positive and negative predictive values of CT study were calculated. RESULTS: Thirty-nine (49%) patients were treated medically with intravenous (IV) antibiotics alone, and 41 (%51) patients were treated both surgically and medically. The overall accuracy of CT in DNI was 63%. The sensitivity, specificity, and positive and negative predictive values were 68%, 56%, 71%, and 53%, respectively. CONCLUSION: CT study has important limitations in differentiating abscess versus cellulitis in DNIs. Clinical findings as well as CT diagnosis should guide the decision of surgery.
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