case_images: PMC11090544_01
case_images: T1-weighted imaging with gadolinium injection revealed bilateral parasagittal meningiomas occupying both supplementary motor area areas. Bone hyperostosis was observed with a slightly increased intensity in the bone cortex, which reflected tumor infiltration.
case_images: SNI-15-150-g001.jpg
case_images: PMC11090544_01_SNI-15-150-g001.jpg
case_images: F1
case_images: The overall extension area of the tumor involved both SMA cortices, completely occluded the middle 1/3 of the superior sagittal sinus area, and burst into the covered bone [Figure 1].
case_images: Magnetic resonance venography (MRV) showed no signal intensity at the middle 1/3 of the superior sagittal sinus (long arrow), indicating total occlusion.
case_images: SNI-15-150-g002.jpg
case_images: PMC11090544_01_SNI-15-150-g002.jpg
case_images: F2
case_images: MRV, indicating total sinus occlusion [Figure 2]. Mild edema was observed around the tumor margins.
case_images: (a-c) Postoperative T1WI c gadolinium-enhanced MRI shows some residual tumor at falx cerebri. (b) The hypointensity area at the superior frontal gyrus around SMA (blue arrow) could cause akinetic mutism.
case_images: SNI-15-150-g003.jpg
case_images: PMC11090544_01_SNI-15-150-g003.jpg
case_images: F3
case_images: Follow-up MRI was done at 3 months, showing minimal residual along the falx cerebri [Figure 3].