在耳硬化早期 ,内软骨骨内被新生海绵灶骨所取代。在晚期 ,脱钙灶重新钙化成致密骨斑前庭窗耳硬化导致进行性传导性听力减退 ,但耳镜检查正常 ;2 /3此类病人在早期均有耳鸣 ,耳蜗耳硬化将引起进行性感音性聋。当两型俱在时 ,则可出现混合性耳聋。前庭窗性耳硬化较常见 ,并且认? Early in otosclerosis, the inner cartilage is replaced by a newborn sponge. In late stages, decalcification lesions recalcify into dense posterior chamber window otosclerosis leading to progressive conduction hearing loss, but the otoscopy is normal; 2/3 of these patients have tinnitus in the early stages and ear otospheric otomy causes a sensory tone Deafness. When the two types of both, you can appear mixed deafness. Vestibular otitis media is more common, and recognize?