Hibbert J, Stell P M
Clin Otolaryngol Allied Sci. 1979 Oct;4(5):321-7. doi: 10.1111/j.1365-2273.1979.tb01760.x.
In this study the radiology of the adenoid is compared in two groups of children: those selected for adenoidectomy and those with a history of head injury who had had a lateral radiograph of the skull. The size of the adenoid was found to be the same in both groups though the nasopharyngeal airway was found to be significantly smaller in the children selected for adenoidectomy. On the basis of measurements in the normal children a lower limit of normal is suggested for the width of the nasopharyngeal airway, this is 2 mm in the case of children below the age of 70 months and 3 mm in the case of children over 70 months old. Only 17% of the children selected for adenoidectomy have abnormally narrow nasopharyngeal airways.
在本研究中，对两组儿童的腺样体影像学表现进行了比较：一组是因腺样体切除术而入选的儿童，另一组是有头部受伤史且已进行过颅骨侧位X线片检查的儿童。尽管发现因腺样体切除术而入选的儿童的鼻咽气道明显较小，但两组儿童的腺样体大小相同。根据对正常儿童的测量结果，提出了鼻咽气道宽度的正常下限，70个月以下儿童为2毫米，70个月以上儿童为3毫米。因腺样体切除术而入选的儿童中，只有17%的儿童鼻咽气道异常狭窄。
