2018 Volume 64 Issue 1 Pages 1-6
A young female patient with conductive hearing loss was referred to our department in Kyushu Univesity Hospital. Since the results of several examinations indicated otosclerosis in the affected ear, she underwent stapes surgery to improve the hearing level. The stapes surgery was successful, but her hearing level remained poor. She underwent reoperation for improvement a year after the first surgery. A teflon piston was precisely inserted into the hole of the foot plate, and the movement of the other ossicles was good. We therefore performed temporal computed tomography again and found ossification of the round window niche. This ossification is rare among causes of a poor improvement in the hearing level. We need to carefully consider the computed tomography findings of the round window before performing stapes surgery.
