AJDRAJNR - American Journal of Neuroradiology

Published ahead of print on October 5, 2007
doi: 10.3174/ajnr.A0729
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Intracranial Extraosseous Chondroblastoma Simulating Meningioma

R.M. Al Mestadya, I.A. Alorainya, S.M. El Watidyb and M.M. Arafahc

a Department of Radiology and Diagnostic Imaging, King Khalid University Hospital, Riyadh, Saudi Arabia
b Department of Surgery,, King Khalid University Hospital, Riyadh, Saudi Arabia
c Department of Histopathology, King Khalid University Hospital, Riyadh, Saudi Arabia


Figure 1
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  		Fig 1. Axial contrast-enhanced CT image of the brain just above the level of the suprasellar cistern showing intensely enhancing right-sided mass with peripheral calcifications (arrow).


Figure 2
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  		Fig 2. Coronal T2-weighted (A) and contrast-enhanced T1-weighted (B) MR images at the level of sella turcica demonstrating the relation of the lesion to the right cavernous sinus. The intermediate signal intensity of the lesion on T2-weighted images and the pattern of enhancement are very suggestive of meningioma.


Figure 3
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  		Fig 3. Anteroposterior projection of right ICA arteriogram. A, Strong tumor blush is seen in the right parasellar region during the early arterial phase with presence of feeding vascular pedicle arising from the cavernous segment of ICA and sun ray pattern of tumor blush. The tumor is compressing and displacing the right ICA and middle cerebral artery. B, Persistent tumor blush in the late venous phase.


Figure 4
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  		Fig 4. Photomicrograph shows highly cellular chondroid matrix with numerous chondroblast cells, giant cells, and mononuclear cells (hematoxylin-eosin, x200).





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