case_images: PMC10783675_01
case_images: Preoperative magnetic resonance imaging (MRI), (a) sagittal T1-weighted MRI with contrast, (b) sagittal T2-weighted MRI, (c) Axial T1-weighted MRI with contrast, showing a cystic mass compressing the spinal cord suggestive of a compressive arachnoid cyst.
case_images: SNI-14-441-g001.jpg
case_images: PMC10783675_01_SNI-14-441-g001.jpg
case_images: F1
case_images: T1-weighted imaging and hyperintense on T2-weighted imaging, without contrast enhancement [Figure 1]. This lesion leads to a suspicion of a compressive arachnoid cyst.
case_images: (a) Preoperative image showing the tumor capsule (black arrow) removed from the surgical bed; (b) Microphotograph showing histopathological findings, tumor proliferation made of cords, lobule. Arachnoid-like tumor cells are rounded, with an abundant basophilic cytoplasm containing a more or less regular nucleus. There are some cytonuclear atypia without mitosis.
case_images: SNI-14-441-g002.jpg
case_images: PMC10783675_01_SNI-14-441-g002.jpg
case_images: F2
case_images: There was no adherence to the spinal cord [Figure 2a]. Histopathologic examination and immunohistochemistry revealed a grade I meningothelial meningioma according to the 2021 World Health Organization classification of tumors of the central nervous system [Figure 2b].