case_images: PMC11302135_01
case_images: Magnetic resonance imaging showing a focal mass around the dorsal extradural space from thoracic 7-10. (a and b), Coronal view (a) T1-weighted and (b) T2-weighted images showing the mass (white arrow). (c) Axial T2-weighted images showing the dorsally located mass (white arrow). (d) Magnetic resonance myelography showing the blockage site (white arrow).
case_images: SNI-15-260-g001.jpg
case_images: PMC11302135_01_SNI-15-260-g001.jpg
case_images: F1
case_images: On T2-weighted imaging, it was high-intensity and distinct from surrounding structures [Figure 1a-c]. Spinal MR myelography confirmed a complete spinal block at the T10 level [Figure 1d].
case_images: Intraoperative view. (a) A C-arm was used to locate the incision site. (b) After the laminectomy, a yellowish mass was found to extend from multiple thoracal levels.
case_images: SNI-15-260-g002.jpg
case_images: PMC11302135_01_SNI-15-260-g002.jpg
case_images: F2
case_images: Using a C-arm, the patient underwent a laminectomy from T7 to T9 [Figure 2].
case_images: Histopathological findings. (a) Macroscopic view of the mass, showing a reddish-yellow color. (b) Microscopic view shows a mixture of mature adipose cells and blood vessels (Hematoxylin and eosin (HE) stain; x100 magnifications). (c) The vascular component comprises small, thin-walled vessels surrounded by mature adipose cells (HE stain; x400 magnifications).
case_images: SNI-15-260-g003.jpg
case_images: PMC11302135_01_SNI-15-260-g003.jpg
case_images: F3
case_images: A dorsal extradural tumor (6 x 2 x 0.5 cm) was encountered, which had a reddish-yellow hue and clear boundaries from surrounding structures [Figure 3a]. Microscopic examination revealed a mixture of mature adipose tissue and blood vessels (anomalous vascular channels) consistent with a SEAL [Figure 3b and 3c].