Archives of the AFIP -- RadioGraphics

Figure Legend | Panel A | Panel B | Panel C

Figure 5: Aggressive osteoblastoma of C-1 in a 9-year-old girl with pain in the upper cervical spine. Panel A CT scan shows a destructive, expansile lesion of the left lateral side of C-1 (arrows) with small foci of mineralized matrix peripherally (arrowheads) and invasion of the surrounding soft tissues and foramen transversarium. Panel B Coronal T2-weighted MR image shows high signal intensity within the mass (arrows). Panel C Digital subtraction angiogram reveals tumor stain (straight arrows) and obstruction of the left vertebral artery (curved arrow).

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