Clinical Characteristics of 7 Patients with Lateral Semicircular Canal Dysplasia / 대한평형의학회지
Journal of the Korean Balance Society
;
: 64-68, 2012.
Article
in Korean
| WPRIM
| ID: wpr-761113
ABSTRACT
BACKGROUND AND OBJECTIVES:
Dysplasia of lateral semicircular canal (LSCC) is the most common inner ear malformation, because LSCC is the last single structure to be formed during inner ear embryogenesis. There have been several case reports about the LSCC anomaly which showed clinical spectrum ranging from no symptom to severe sensorineural hearing loss. The authors investigated the clinical characteristics of 7 patients with LSCC dysplasia. MATERIALS ANDMETHODS:
The medical records of 7 patients who were diagnosed as LSCC dysplasia from temporal bone computed tomography were retrospectively reviewed. We analysed the findings of history taking, pure tone audiometry, speech audiometry, and caloric tests.RESULTS:
The LSCC dysplasia was observed in all of 7 patients in which 5 showed unilaterally confined LSCC dysplasia, 1 showed bilaterally confined LSCC dysplasia, and 1 exhibited bilateral LSCC dysplasia combined with bilateral posterior semicircular canal dysplasia. From 7 patients, hearing loss was chief complaint only in 2 patients. Pure tone audiometry revealed sensorineural hearing loss in one patient, and conductive hearing loss in the other patient. Two patients complained of whirling type vertigo, and 3 complained of nonspecific dizziness.CONCLUSION:
The patients with LSCC dysplasia may show variable symptoms such as sensorineural hearing loss, conductive hearing loss, vertigo and nonspecific dizziness.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Audiometry
/
Audiometry, Speech
/
Temporal Bone
/
Semicircular Canals
/
Vertigo
/
Medical Records
/
Retrospective Studies
/
Embryonic Development
/
Dizziness
/
Hearing Loss, Conductive
Type of study:
Observational study
Limits:
Female
/
Humans
/
Pregnancy
Language:
Korean
Journal:
Journal of the Korean Balance Society
Year:
2012
Type:
Article
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