Congenital cholesteatoma is an uncommon disease which can potentially lead to serious consequences such as loss of hearing in childhood or facial paralysis later on. 摘要先天性胆脂瘤乃一不常见之疾病，可能引发严重并发症，如幼年听力丧失或颜面神经麻痹。
Bell's palsy, the most common cause of facial paralysis, results from damage or trauma to one of the two facial neres, but most people recoer completely within months. 通常面痹的原因是由下面的因素造成的，如面神经麻痹，中风和脑部肿瘤。
These figures have been lowered as more has been learned about conditions that are now diagnosed as other types of facial palsies. 这个数字还在降低，因为随着症状被进一步研究，其中一些可以确症为其他种类的面瘫。
