Superior Canal Dehiscence Patients Have Smaller Mastoid Volume than Age- and Sex-Matched Otosclerosis and Temporal Bone Fracture Patients.
10.7874/kja.2012.16.3.120
- Author:
Byoung Soo SHIM
1
;
Byung Chul KANG
;
Chang Hee KIM
;
Tae Su KIM
;
Hong Ju PARK
Author Information
1. Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. dzness@amc.seoul.kr
- Publication Type:Original Article
- Keywords:
Semicircular canals;
Dehiscence;
Mastoid;
Radiology;
Computed tomography
- MeSH:
Humans;
Mastoid;
Otosclerosis;
Semicircular Canals;
Temporal Bone
- From:Korean Journal of Audiology
2012;16(3):120-123
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND AND OBJECTIVES: The purpose of the study was to compare the mastoid air-cell volume of the patients with superior semicircular canal dehiscence syndrome (SCDS) and that of the control patients with otosclerosis and temporal bone (TB) fracture. SUBJECTS AND METHODS: Ten patients with SCDS were enrolled and 10 patients with bilateral otosclerosis and TB fracture were selected as control groups by age and sex matching. To measure the mastoid air-cell volume, 3D reconstruction software was used. RESULTS: In 10 patients with SCDS, the mean age was 44.5 years, ranging from 16 to 79 years (M : F=4 : 6). Mean mastoid air-cell volume in the SCDS side was 3319.9 mm3, whereas 4177.2 mm3 in the normal side (p=0.022). Mean mastoid air-cell volume in the right side of otosclerosis patients was 6594.3 mm3 and it was not different from 6380.5 mm3 in the left side (p=0.445). Mean mastoid air-cell volume in normal side of TB fracture was 6477.2 mm3. The mastoid air-cell volume in the SCDS side was significantly smaller than that of otosclerosis and TB fracture patients (p=0.009, p=0.002, respectively). The mastoid air-cell volume in the normal side of SCDS was significantly smaller than that of TB fracture (p=0.019), but not significant with that of otosclerosis (p=0.063). CONCLUSIONS: Our findings revealed that the mastoid air-cell volume in the SCDS side was significantly smaller than control group, which suggest that the decreased mastoid pneumatization is closely related to the generation of SCDS.
