Lee Jeon Mi, Lee Hyun Jin, Kim Sung Huhn
Department of Otorhinolaryngology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Republic of Korea.
Department of Otorhinolaryngology-Head and Neck Surgery, Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Case Rep Otolaryngol. 2022 Mar 19;2022:8620738. doi: 10.1155/2022/8620738. eCollection 2022.
We report a case of conductive hearing loss caused by isolated congenital stapedial suprastructure fixation with normal footplate mobility. A 60-year-old woman visited the clinic for right-sided mixed hearing loss. Exploratory tympanotomy revealed a bony synostosis between the stapedial suprastructure and promontory, while all the ossicles were present and normally shaped. As the bony synostosis was separated, the stapes became mobile. This is the first report in the medical literature of this congenital ear anomaly. This case also illustrates that stapedial fixation can occur in the suprastructure as well as in the footplate; thus, one must be mindful of this when performing exploratory tympanotomy for stapes fixation.
我们报告一例由孤立性先天性镫骨上结构固定且足板活动正常引起的传导性听力损失。一名60岁女性因右侧混合性听力损失就诊于诊所。探查性鼓室切开术显示镫骨上结构与岬之间存在骨性融合，而所有听小骨均存在且形态正常。当骨性融合分离后，镫骨变得可活动。这是医学文献中关于这种先天性耳部异常的首例报告。该病例还表明镫骨固定可发生在上结构以及足板；因此，在对镫骨固定进行探查性鼓室切开术时必须注意这一点。
