Chondromyxoid fibroma of the mastoid facial nerve canal mimicking a facial nerve schwannoma |
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| Authors: | Andrew L. Thompson MBBS Aditya Bharatha MD Richard I. Aviv MBChB Julian Nedzelski MD Joseph Chen MD Juan M. Bilbao MD John Wong MD Reda Saad MD Sean P. Symons MD |
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| Affiliation: | 1. Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada;2. Department of Otolaryngology–Head & Neck Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada;3. Department of Pathology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada |
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| Abstract: | ![]()
Chondromyxoid fibroma of the skull base is a rare entity. Involvement of the temporal bone is particularly rare. We present an unusual case of progressive facial nerve paralysis with imaging and clinical findings most suggestive of a facial nerve schwannoma. The lesion was tubular in appearance, expanded the mastoid facial nerve canal, protruded out of the stylomastoid foramen, and enhanced homogeneously. The only unusual imaging feature was minor calcification within the tumor. Surgery revealed an irregular, cystic lesion. Pathology diagnosed a chondromyxoid fibroma involving the mastoid portion of the facial nerve canal, destroying the facial nerve. Laryngoscope, 2009 |
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| Keywords: | Chondromyxoid fibroma facial nerve mastoid temporal bone schwannoma |
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