Article Figures & Data
Figures
- Fig 1.
Axial postcontrast CT scans of the neck and chest.
A, Axial postcontrast neck CT scan shows an avidly enhancing, slightly heterogeneous soft tissue mass located deep to the left sternocleidomastoid muscle. This lobulated lesion has an almost “pancreatic-like” appearance. B, Axial postcontrast chest CT scan shows a similar mass in the left paraspinal region, which also enhances avidly with slight heterogeneity.
- Fig 2.
Axial and coronal MR images of the neck and chest.
A, Axial T2-weighted (TR, 3000; TE, 120) image of the neck shows a nearly uniformly hyperintense mass deep to the left sternocleidomastoid muscle with an extension in between the left posterior paraspinal musculature. The hyperintense area on the contralateral side is a cluster of normal small lymph nodes. B, Postgadolinium coronal T1-weighted (TR, 500; TE, 12) image of the chest shows a diffusely enhancing left paraspinal mass extending in the craniocaudal direction. A prominent flow void within this mass is appreciated on this image and suggests tumor vascularity.
- Fig 3.
(hematoxylin and eosin, 100× original magnification) The mass comprised lobules of brown adipose cells with prominent vasculature. As seen here, these cells were predominantly multivacuolated granular eosinophilic cells with spherical nuclei.
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