PMC6911672_01
Preoperative contrast-enhanced magnetic resonance imaging (MRI) images showing well-defined bilateral enhancing lesions. The neuraxis is sandwiched between the lesions and severely compressed (a) Axial: bilateral enhancing mass lesion at foramen magnum, (b) Sagittal images MRI, (c) Coronal image MRI, (d) Computed tomography angiography showing relation of lesions with both vertebral arteries.
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F1
The mass measured 14 mm (craniocaudal) x 12 mm (anterior- posterior) x 8 mm (width) on the right side and 12 mm (craniocaudal) x 11 mm (anterior-posterior) x 7 mm (width) on the left side [Figure 1].
Postoperative contrast-enhanced magnetic resonance imaging (a) axial, (b) sagittal, (c) coronal images showing complete resection of the right-sided meningioma with the left-sided residual tumor.
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F2
A contrast-enhanced MRI at follow-up of 6 months showed complete removal of tumor on the right side and small residual lesion on the left side [Figure 2].
Histopathology illustrating tumor comprised round to oval cells with indistinct cytoplasm arranged in syncytial sheets and whorls along with psammoma bodies. No atypical mitosis or areas of necrosis noted.
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F3
Histopathology revealed meningothelial meningioma (WHO-Grade 1) [Figure 3].