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KMID : 0390220040150010150
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Journal of Clinical Otolaryngology, Head and Neck Surgery
2004 Volume.15 No. 1 p.150 ~ p.153
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A Case of Lateral Semicircular Canal Dysplasia with Normal Cochlea： Diagnosis by Three-Dimensional Reconstruction Based on Images from Spiral High-Resolution Temporal Bone Computed Tomography
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Joo Young-Hoon
Jun Beom-Cho
Lee Dong-Hee
Choi Hyeog-Gi
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Abstract
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When compared with anomalies of the external and middle ear, congenital anomalies of the inner ear present a clinical problem for diagnosis because the inner ear structures can not be observed directly. Since the structures, such as cochlea, semicircular canals, facial nerve, and ossicles, have a complex relationship in the temporal bone, it is difficult to describe their exact spatial relationships by conventional computed tomography. In recent years, three-dimensional recontruction technique based on images from high-resolution computed tomographs (HRCT) permits more reliable and definitive description of these structures. We experienced one rare case of lateral semicircular canal dysplasia with normal cochlea development. Three-dimensional recontructed images based on HRCT represented an isolated lateral semicircular canal dysplasia in detail. Thus, we report this case with a review of the literature.
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KEYWORD
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Semicircular canal, Congenital, Abnormality, Three dimensional imaging
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