J Korean Neurosurg Soc.  2011 Jul;50(1):51-53. 10.3340/jkns.2011.50.1.51.

Medulloblastoma Manifesting as Sudden Sensorineural Hearing Loss

• Terakawa Y
• Tsuyuguchi N
• Takami T
• Ohata K

• KMID: 2066853
• DOI: http://doi.org/10.3340/jkns.2011.50.1.51

Abstract

We present a rare case of medulloblastoma which presented with unilateral sudden sensorineural hearing loss as an initial symptom. A 19-year-old man was admitted to our hospital with a chief complaint of dizziness and facial numbness on the right side. His illness had begun two years previously with sudden hearing loss on the right side, for which he had been treated as an idiopathic sudden hearing loss. Magnetic resonance imaging demonstrated abnormal signals located mainly in the right middle cerebellar peduncle. We performed partial resection of the tumor by suboccipital craniotomy. The histopathological diagnosis was medulloblastoma. Intrinsic brain tumor is an extremely rare cause of sudden sensorineural hearing loss and is therefore easily overlooked as was in the present case. The present case highlights not only the need to evaluate patients with sudden sensorineural hearing loss by magnetic resonance imaging but also the importance of paying attention to intrinsic lesions involving the brainstem. Although this condition like the presented case might be rare, intrinsic brain tumor should be considered as a potential cause of sudden sensorineural hearing loss, as it may be easily missed leading to a delay in appropriate treatment.

Keyword

Medulloblastoma; Sudden hearing loss; Sensorineural hearing loss; Intrinsic tumor; Brain tumor

MeSH Terms

Brain Neoplasms
Brain Stem
Craniotomy
Dizziness
Hearing Loss, Sensorineural
Hearing Loss, Sudden
Humans
Hypesthesia
Magnetic Resonance Imaging
Medulloblastoma
Young Adult