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KMID : 0361020180610020099
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Korean Journal of Otolaryngology - Head and Neck Surgery
2018 Volume.61 No. 2 p.99 ~ p.102
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Diagnosis and Treatment of Peritonsillar Abscess with Single Enhanced Computed Tomography
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Song Ku-Da-Mo
Lee Jun
Choi So-Young
Choi Myung-Su
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Abstract
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Background and Objectives: Diagnostic features of peritonsillar abscess are an asymmetrically enlarged palatine tonsil with peripheral rim enhancement and central low density in the post-contrast computed tomography (CT). Although it is necessary to differentiate tumorous conditions of tonsils to compare pre- and post-contrast CT, pre-contrast CT may be less useful in the diagnosis of peritonsillar abscess. This study aims to evaluate of the efficacy of single post-contrast CT for diagnosis and treatment of peritonsillar abscess.
Subjects and Method: We retrospectively compared 29 patients with peritonsillar abscess, who were diagnosed by single post-contrast CT, with 36 patients diagnosed by pre- and post-contrast CT to determine the success rates of pus drainage and hospital days. Additionally, two otorhinolaryngologists made a judgment of abscess presence for sixty randomly mixed CT images of peritonsillar abscess or tonsillitis with pre- and post-contrast CT or single post-contrast CT.
Results: There were no significant differences in the success rate of drainage (p=0.622) and hospital days (p=0.504) between groups with/without pre-contrast CT. Abscess presence was judged by raters with/without pre-contrast CT. Inter-rater agreement value (Cohen’s kappa) was 0.825 (p＜0.01).
Conclusion: Single post-contrast CT of peritonsillar abscess may be a good alternative for diagnosis and treatment and may reduce unnecessary exposure to radiation.
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KEYWORD
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Computed tomography, Contrast media, Peritonsillar abscess, Sensitivity, Specificity
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