case_images: PMC6893274_01
case_images: Follow-up CT with contrast medium one month after surgery for clear cell renal cell carcinoma showing a homogeneously enhanced mass without intralesional calcifications.
case_images: CRIOR2019-3926903.001.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.001.jpg
case_images: fig1
case_images: Follow-up CT imaging with contrast medium one month after the surgery for the kidney cancer detected a homogenously enhanced mass without intralesional calcifications in the spinal canal at the level of T9 (Figure 1), although she had no symptoms related to the mass lesion.
case_images: MRI findings showing an intradural-extramedullary mass with isointensity on T1-weighted images (a) and hypointensity on T2-weighted images (b), enhanced heterogeneously with gadolinium (c).
case_images: CRIOR2019-3926903.002.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.002.jpg
case_images: fig2
case_images: 18F-FDG-PET/CT findings showing no accumulation in the intradural-extramedullary site at the level of T9.
case_images: CRIOR2019-3926903.003.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.003.jpg
case_images: fig3
case_images: White-yellowish hard tumor was resected in a piecemeal fashion.
case_images: CRIOR2019-3926903.004.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.004.jpg
case_images: fig4
case_images: First, we performed laminectomies of T8 and T9 and a biopsy of a white-yellowish hard tumor located in the intradural-extramedullary site for intraoperative pathological consultation (Figure 4), which showed no evidence of malignancy.
case_images: The tumor consisted of spindle cells with ovoid to spindle-shaped nuclei, arranged without a pattern with stromal hyalinized collagen (HE staining) (a, b). On immunohistochemical staining, CD34 (c), bcl-2 (d), and STAT6 (e) were positive, while S-100 protein (f) and EMA (g) were negative.
case_images: CRIOR2019-3926903.005.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.005.jpg
case_images: fig5
case_images: On an immunohistochemical examination, CD34, bcl-2, and STAT6 were positive, while S-100 protein, neurofilament protein, and EMA were negative (Figure 5).
case_images: MRI of the thoracic spine showed no evidence of tumor recurrence three years after the surgery for intradural-extramedullary SFT/HPC.
case_images: CRIOR2019-3926903.006.jpg
case_images: PMC6893274_01_CRIOR2019-3926903.006.jpg
case_images: fig6
case_images: MRI of the thoracic spine showed no evidence of tumor recurrence (Figure 6), and enhanced whole-body CT also showed no evidence of metastasis or recurrence of SFT/HPC and other tumors.