内听道骨瘤罕见，世界文献中仅12例报告，加上该作者l例，共13例。因为内听道骨瘤和生长与其他部位的骨瘤一样，可以是无症状的，只在直接压迫耳蜗前庭神经束时才出现症状，并同神经撤的症状相同，造成诊断上的困难。该作者报道的病人成为支持Fried－berg骨瘤形成理论的世界首 Internal auditory osteosarcoma rare, only 12 cases reported in the world literature, with the author l cases, a total of 13 cases. Because internal osseous osteosarcoma and growth and other parts of the osteoma, can be asymptomatic, only in the direct compression of the cochlear vestibular nerve bundle when the symptoms appear, and with the same symptoms of nerve withdrawal, resulting in diagnostic difficulties. The authors reported that the patient became the world leader in the theory of Friedberg’s osteoma