患者,男,2岁,藏族。于1992年7月3日上午因患儿家长发现其外耳道可见上下蠕动的虫子,故来我院门诊就医。查体:患儿神态不安,心肺正常,四肢活动正常,耳部检查:右侧未见异常;左侧外耳道可见数只上下蠕动活跃的幼虫。即刻在左外耳道内注入95%的乙醇约0.3ｍｌ,5分钟后蠕动缓慢,用齿 Patient, male, 2 years old, Tibetan. In the morning of July 3, 1992, parents of children found that their external auditory meatus can be seen moving up and down the worms, it came to our hospital for medical treatment. Physical examination: children with uneasy, normal lung and lungs, limbs normal, ear examination: no abnormalities on the right; the left external auditory canal can only see a few up and down the active larvae. Immediately in the left external auditory canal about 95% ethanol injection of about 0.3ml, 5 minutes after the slow peristalsis, with teeth