Female, 39 years old, with breast cancer and findings concerning for a cervical spine osseous lesion. The right lateral mass of C1 shows pathologic marrow signal abnormality and enhancement. This lesion correlates to a focus of increased FDG uptake on PET. No evidence of significant epidural extension is seen.The remaining osseous structures demonstrate normal marrow signal characteristics. No additional enhancing lesions are seen. Spinal alignment is anatomic and vertebral body heights are preserved.The intervertebral discs are within normal limits. No evidence of significant spinal canal or foraminal stenosis is seen. The spinal cord shows normal signal intensity and morphology throughout and is free of pathologic enhancement. No epidural lesions are suspected.
Findings are seen compatible with a metastatic lesion involving the right lateral mass of C1. No associated epidural involvement is seen. No additional lesions are detected.