case_images: PMC10481817_01
case_images: Initial radiological characteristics. Sagittal computed tomography images reveal the enlargement of the right C3/4 intervertebral foramen (arrow) and no calcification (a). A cervical dumbbell-type tumor exhibits isointensity on an axial T1-weighted magnetic resonance image (d) and heterogeneous hyperintensity on an axial T2-weighted magnetic resonance image (e). The tumor is heterogeneously enhanced with a gadolinium contrast agent (f). The tumor is located at the C2-4 level (b and c: coronal T1-weighted images with a gadolinium contrast agent). The cervical spinal cord and right vertebral artery (f, arrowhead) are compressed by the tumor.
case_images: SNI-14-301-g001.jpg
case_images: PMC10481817_01_SNI-14-301-g001.jpg
case_images: F1
case_images: The lesion was isointense on T1-weighted and hyperintense on T2-weighted MR images, and it was heterogeneously enhanced with gadolinium [Figure 1].
case_images: Angiographical characteristics. Right vertebral angiography reveals atherosclerotic stenosis of the V4 segment (arrowheads), and the V2 segment of the right vertebral artery is medially shifted (arrow) (a). Blood flow to the right V4 segment from the left vertebral artery is observed through left vertebral angiography (b). The blood flow is interrupted upon right vertebral angiography performed during right rotation of the neck (c).
case_images: SNI-14-301-g002.jpg
case_images: PMC10481817_01_SNI-14-301-g002.jpg
case_images: F2
case_images: On angiography, right vertebral compression was attributed both to the tumor and atherosclerosis [Figure 2].
case_images: Comparison of initial and follow-up magnetic resonance images. Gadolinium-enhanced, T1-weighted magnetic resonance images reveal spontaneous shrinkage of the cervical dumbbell-type tumor (a-d: Initial images, e-h: Follow-up images, 7 years after the initial examination).
case_images: SNI-14-301-g003.jpg
case_images: PMC10481817_01_SNI-14-301-g003.jpg
case_images: F3
case_images: Over the next 4 years, repeated MR imaging studies revealed that the cervical tumor was spontaneously shrinking [Figure 3].