Fibrous Dysplasia MRI

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These images show a large extensive heterogeneously enhancing expansile osseous lesion which crosses sutures and involves the right frontal and temporal calvarium, bony orbit, right ethmoid, and maxillary sinuses resulting in severe facial deformity and marked right proptosis. The involved sinuses and mastoid air cells are obliterated. This heterogeneous appearance and enhancement on MRI can be potentially misleading to think of more aggressive neoplasms. Many times the CT appearance of ground-glass opacity helps to cinch the diagnosis of craniofacial fibrous dysplasia. The patient may develop symptoms related to cranial nerve palsies from narrowing of the skull base foramina. DB NMR 23 • For more, visit our website at http://ctisus.com

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