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Chondromyxoid fibroma of the mastoid portion of the temporal bone: MRI and PET/CT findings and their correlation with histology

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April 18, 2013
by Noeun Oh, MD; Azita S. Khorsandi, MD; Sophie Scherl, BA; Beverly Wang, MD; Bruce M. Wenig, MD; Spiros Manolidis, MD; Adam Jacobson, MD


We report a very rare case of a chondromyxoid fibroma of the mastoid portion of the temporal bone in a 38-year-old woman who presented with left-sided hearing loss. Magnetic resonance imaging identified an expansile mass in the left mastoid bone with a heterogeneous hyperintense signal on T2-weighted imaging and peripheral enhancement. Subsequent positron emission tomography/computed tomography identified erosive bony changes associated with hypermetabolism. The patient underwent an infratemporal fossa resection with a suboccipital craniectomy/cranioplasty. We briefly review the aspects of this case, including a discussion of the differential diagnosis and the correlation between histologic and imaging findings.

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