Nemzek W R, Katzberg R W, Van Slyke M A, Bickley L S
Department of Diagnostic Radiology, University of California Davis Medical Center, Sacramento 95817, USA.
AJNR Am J Neuroradiol. 1995 Mar;16(3):495-502.
To evaluate the radiologic characteristic of acute inflammation of the epiglottis and supraglottic structures in adults.
The clinical and radiographic findings in 27 adult patients with epiglottitis (average age, 43 years; range, 28 to 81 years) were compared with those of a control group of asymptomatic subjects (n = 15; average age, 48 years; range, 24 to 79 years). Unusual clinical aspects in the current series included two patients who were positive for human immunodeficiency virus, 1 with acquired immunodeficiency syndrome and Kaposi sarcoma, 3 with emphysematous epiglottitis, 1 with abscess formation, and 1 with laryngeal carcinoma. One patient required emergency tracheostomy. One patient died of pneumonia.
The ratio of the soft-tissue parameters to the anteroposterior width of the C-4 vertebral body yielded three key parameters of high statistical significance in adult epiglottitis. The ratio of the width of the epiglottis to the anteroposterior width of C-4 should not be greater than 0.33 (sensitivity, 96%; specificity, 100%). The ratio of the prevertebral soft tissue to C-4 should not exceed 0.5 (sensitivity, 37%; specificity, 100%) and the ratio of the width of the hypopharyngeal airway to the width of C-4 should be less than 1.5 (sensitivity, 44%; specificity, 87%). The aryepiglottic folds were enlarged in 85%, and the arytenoids were swollen in 70% of the patient population (specificity, 100%).
These defined radiologic parameters should aid in the diagnosis of acute epiglottitis in adults.
评估成人会厌和声门上结构急性炎症的放射学特征。
将27例成人会厌炎患者(平均年龄43岁;范围28至81岁)的临床和影像学表现与15例无症状对照受试者(平均年龄48岁;范围24至79岁)进行比较。本系列中不寻常的临床情况包括2例人类免疫缺陷病毒阳性患者,1例患有获得性免疫缺陷综合征和卡波西肉瘤,3例患有气肿性会厌炎,1例有脓肿形成,1例有喉癌。1例患者需要紧急气管切开术。1例患者死于肺炎。
在成人会厌炎中,软组织参数与C-4椎体前后径的比值产生了三个具有高度统计学意义的关键参数。会厌宽度与C-4椎体前后径的比值不应大于0.33(敏感性96%;特异性100%)。椎前软组织与C-4的比值不应超过0.5(敏感性37%;特异性100%),下咽气道宽度与C-4宽度的比值应小于1.5(敏感性44%;特异性87%)。85%的患者杓会厌襞增宽,70%的患者杓状软骨肿胀(特异性100%)。
这些明确的放射学参数应有助于成人急性会厌炎的诊断。