case_images: PMC10575477_01
case_images: Preoperative audiogram. The open circles and x-marks indicate audiograms of the right and left ear, respectively, at first visit. Filled triangles indicate the audiogram of the left ear acquired 4 days later.
case_images: fneur-14-1281023-g001.jpg
case_images: PMC10575477_01_fneur-14-1281023-g001.jpg
case_images: fig1
case_images: An audiogram showed moderate sensorineural hearing loss (43.3 dB) in the left ear (Figure 1). Despite of these treatment, his hearing worsened (Figure 1) and he experienced vertigo with rightward beating nystagmus on lying in the left-side down position.
case_images: Surgical view. A small fissure (arrow) is seen in the floor of the round window niche, and clear fluid is seen leaking. CT, chorda tympani; RWM, round window membrane; S, stapes.
case_images: fneur-14-1281023-g002.jpg
case_images: PMC10575477_01_fneur-14-1281023-g002.jpg
case_images: fig2
case_images: A small fissure with accumulating clear fluid at the floor of the round window niche was observed (Figure 2).
case_images: Audiogram acquired 1 month postoperatively. Hearing acuity of the left ear is improved.
case_images: fneur-14-1281023-g003.jpg
case_images: PMC10575477_01_fneur-14-1281023-g003.jpg
case_images: fig3
case_images: Postoperatively, his hearing (20.0 dB at 1 month after surgery) and disequilibrium improved (Figure 3).