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KMID : 0390220000110020330
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Journal of Clinical Otolaryngology, Head and Neck Surgery
2000 Volume.11 No. 2 p.330 ~ p.334
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A Case of Cholesterol Granuloma Destroying Mastoid Cavity and Posterior Wall of External Auditory Canal
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Abstract
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Cholesterol granuloma is an unusual lesion of temporal bone and may develop in any portion of the pneumatic
system. Proposed factors in the pathophysiology of cholesterol granuloma include hemorrhage, interference
with drainage, and inadequate aeration. Cholesterol granuloma is commonly encuntered in the middle ear and
sclerotic mastoid during chronic otitis media operation. In sclerotic mastoid, cholesterol granuloma usually
restricted to a small lesion without destruction of the surrounding structure. Without chronic otitis media and
previous otologic operation history, it was reported rarely in pneumatic petrous apex and extremely rarely in
mastoid and external auditory canal. In this case, the pneumatic bone can be destroyed by expansile mass. A 9-
year-old female patient came to ENT clinic with progressive hearing loss for 9 months. The external auditory
canal was obstruction with bulging mass from posterior canal wall. Cholesterol granuloa was destroying
mastoid cavity and posterior canal wall without any other otologic diseases. Destroyed posterior canal wall was
reconstructed with a piece of conchal cartilage.
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KEYWORD
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