case_images: PMC11758182_01
case_images: The preoperative and postoperative imaging findings of the patient. On preoperative MRI, the lesion showed variable signal intensity within the spinal canal on sagittal T1-weighted and T2-weighted images (A, B). Uniform enhancement was observed on sagittal and axial views (C, D). Postoperative sagittal T1-weighted and T2-weighted images showed signal intensity consistent with no tumor recurrence (E, F).
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case_images: PMC11758182_01_fonc-14-1505141-g001.jpg
case_images: f1
case_images: On T1- and T2-weighted images (WIs), the mass appeared iso-dense and showed homogeneous enhancement with gadolinium contrast ( Figures 1A-D ). The postoperative course was uneventful, and postoperative MRI confirmed total resection of the lesion ( Figures 1E, F ).
case_images: Intraoperative Findings (A) Tumor exposure. (B) The tumor capsule was intact and mobile, with no significant attachment to the dura mater. (C) Some nerves were fused with the lesion. (D) Complete tumor resection.
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case_images: PMC11758182_01_fonc-14-1505141-g002.jpg
case_images: f2
case_images: We first finished the intratumoral decompression, meticulously separated the tumor from the nerve roots, and then cut off the so-called nerve of lesion origin under electrophysiological monitoring to achieve complete resection of the lesion ( Figure 2 ).
case_images: Pathological Analysis of CCM. Hematoxylin & eosin (magnification, x 20) (A); Epithelial Membrane Antigen positive: EMA (magnification, x 20) x (B), Ki-67 (MIB-1) Immunostaining (magnification, x 20) (C), Somatostatin Receptor 2 staining (magnification, x 20) (D).
case_images: fonc-14-1505141-g003.jpg
case_images: PMC11758182_01_fonc-14-1505141-g003.jpg
case_images: f3
case_images: Immunohistochemistry ( Figure 3 ) of the tumor revealed positivity for epithelial membrane antigen (EMA) and somatostatin receptor-2 (SSTR-2), with a Ki-67 (MIB-1) labeling index of 5%.