Korean J Otolaryngol-Head Neck Surg.
1997 Jul;40(7):1063-1067.
Primary Cholesteatoma Originating in the Posterior Fossa
- Affiliations
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- 1Department of Otolaryngology, College of Medicine, Chonbuk National University, Chonju, Korea.
- 2Department of Neurosurgery, College of Medicine, Chonbuk National University, Chonju, Korea.
Abstract
- Primary cholesteatomas(epidermoids) originating in the posterior fossa are rare lesions that grow to a large size through slow accumulation of desquamated epithelium. These lesions grow between and ultimately displace cranial nerves, vascular structures, and the brainstem, causing a long course of progressive neurological deficits. Primary cholesteatomas are diagnosed with computed tomography and magnetic resonance imaging. The treatment of choice is surgical excision but portions of the capsule adherent to vital structures should be left undisturbed. Several approaches or combinations of approaches have been utilized to reach the lesions of the ventral brainstem. Among these, the petrosal approach has many advantages. We have experienced a huge primary cholesteatoma of the posterior fossa, so we report with review of literatures.
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