PMC5451758_01
Pure tone audiometry results, before (a) and one month after (b) the intratympanic treatment. A bilateral hearing improvement, significantly more evident in the right side, is noticeable after treatment.
CRIOT2017-6195317.001.jpg
PMC5451758_01_CRIOT2017-6195317.001.jpg
fig1
PTA revealed a threshold of 95.9 dB and an ABG of 42.5 dB in the left ear and a threshold of 97.70 dB and an ABG of 17.5 dB in the right ear (Figure 1(a)). PTA values one month after the first injection were 86.8 dB with an ABG of 28.75 dB in the left ear and 62.7 dB with an ABG of 12.5 dB in the right ear (Figure 1(b)).
CT scan results: the endolymphatic duct and sac in the left side are larger (2.2 mm) than in the right side (1.4 mm).
CRIOT2017-6195317.002.jpg
PMC5451758_01_CRIOT2017-6195317.002.jpg
fig2
CT revealed a 2.2 mm dilatation of the left vestibular aqueduct. A small (diameter: 2.6 mm) area of altered signal intensity was evident in the left vestibule (Figure 2). Enlarged endolymphatic ducts and sacs were seen on MRI (Figure 3) in the left side. CT and MRI images were also evaluated for cochlear dysplasia, cochlear-vestibular dysplasia, and modiolar hypoplasia based on published criteria.
MRI. TSE T1 (a) and T2 WIs (b) images. The area of altered signal intensity in the left utricle is clearly defined while no abnormalities are seen in the right utricle.
CRIOT2017-6195317.003.jpg
PMC5451758_01_CRIOT2017-6195317.003.jpg
fig3
CT revealed a 2.2 mm dilatation of the left vestibular aqueduct. A small (diameter: 2.6 mm) area of altered signal intensity was evident in the left vestibule (Figure 2). Enlarged endolymphatic ducts and sacs were seen on MRI (Figure 3) in the left side. CT and MRI images were also evaluated for cochlear dysplasia, cochlear-vestibular dysplasia, and modiolar hypoplasia based on published criteria.