case_images: PMC2265298_01
case_images: together with continuous line and ( indicate hearing level of air conduction, and bone conduction in right ear respectively.. x together with dotted line and  ) indicate hearing level of air conduction, and bone conduction in left ear respectively.
case_images: 1751-0759-2-3-1.jpg
case_images: PMC2265298_01_1751-0759-2-3-1.jpg
case_images: F1
case_images: Audiogram revealed a severe sensorineural hearing loss at 35.0 dB, with a predominance of low frequency impairment in the right ear (Figure 1).
case_images: together with continuous line and ( indicate hearing level of air conduction, and bone conduction in right ear respectively.. x together with dotted line and  ) indicate hearing level of air conduction, and bone conduction in left ear respectively.
case_images: 1751-0759-2-3-2.jpg
case_images: PMC2265298_01_1751-0759-2-3-2.jpg
case_images: F2
case_images: Since April 2004, however, a few times per month the patient has experienced vertigo spells that were intractable to conventional medical therapy (Figure 2).
case_images: Audiogram on October 2006.
case_images: 1751-0759-2-3-3.jpg
case_images: PMC2265298_01_1751-0759-2-3-3.jpg
case_images: F3
case_images: An audiogram performed in October 2006 revealed that the patient's right-side hearing level deteriorated to 62.5 dB (Figure 3).