File:Base of skull chondrosarcoma (Radiopaedia 30410-31071 Axial bone window 44).jpg

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Description	Radiopaedia case ID: 30410 Image ID: 7959397 Image stack position: 44/48 Plane projection: Axial Aux modality: bone window Study findings: In the right petrous apex a destructive lesion is present with irregular bony margins, extending to the carotid canal. It does not have a sclerotic margin nor does it have internal calcification / mineralization. Note is made of inspisated calcified right maxillary antral secretions. Modality: CT System: Central Nervous System Findings: At the right petrous apex a soft tissue mass with intermediate T1 signal, very high T2 signal and prominent contrast enhancement, is noted. It extends to the anterior margin of the internal acoustic meatus posteriorly and to the carotid canal anteriorly. Normal flow void in the artery is preserved. No internal calcification. Conclusion: In this location, a lesion with very high T2 signal most likely represents a chondrosarcoma. Chordomas are usually more medial (midline). Other lesions would not be expected to be this enhancing and high T2 in signal (with the exception of a hemangioma, which would not be expected to have so much bony destruction).
Date	Published: 11th Jul 2016
Source	https://radiopaedia.org/cases/base-of-skull-chondrosarcoma-1
Author	Frank Gaillard
Permission (Permission-reusing-text)	http://creativecommons.org/licenses/by-nc-sa/3.0/

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:35, 7 June 2021		512 × 512 (23 KB)	Fæ (talk \| contribs)	Radiopaedia project rID:30410 (batch #3730-44 A44)

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