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CT and MR Imaging of Giant Cell Granuloma of the Craniofacial Bones

J.S. Nackosa, R.H. Wiggins, IIIa and H.R. Harnsbergera

a Department of Radiology, University of Utah, Salt Lake City, Utah


Figure 1
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  		Fig 1. Case 1. Images in a 51-year-old man with a history of painful maxillary swelling caused by GCG.

A, Contrast-enhanced axial CT image demonstrates an expansile lesion arising from the anterior and inferior left maxilla, with heterogeneous enhancement and soft tissue seen anterior to the maxilla.

B, Bone algorithm–correlating image demonstrates the osseous expansile changes, with thinning of the anterior wall and central foci of increased attenuation consistent with mineralization seen with GCG.


Figure 2
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  		Fig 2. Case 2. Images in a 38-year-old man with a 20-year history of intermittent left-temporal and forehead pain caused by a GCG arising from the left pterygopalatine fossa.

A, Axial CT bone algorithm image demonstrates a lesion arising from the left pterygopalatine fossa. There are surrounding osseous expansile changes including expansion of the anterior left vidian canal (white arrow) compared with the normal right vidian canal (black arrow).

B, Correlating contrast-enhanced axial T1-weighted image shows avid homogeneous enhancement of this lesion, again with the expansion of the anterior left vidian canal (white arrow).


Figure 3
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  		Fig 3. Case 3. Images in a 39-year-old woman with a history of a slowly expanding mass in the nasal cavity caused by a GCG of the right nasal vault.

A, Axial postcontrast CT image shows an avid homogeneously enhancing lesion arising from the anterior right nasal vault, with thinning and expansion of the surrounding osseous anatomic landscape extending into the right maxillary sinus.

B, Coronal postcontrast CT image also shows the osseous expansile changes of the surrounding anatomic landscape, with extreme thinning and secondary obstruction of the paranasal sinus air cells.





Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X