PMC7451164_01
(a-c) Axial noncontrast computed tomography head showing isointense tumor in the right incisural space causing distortion of the brain stem and producing mass effect. (d-f) Magnetic resonance imaging (MRI) T1WI sagittal section showing hypodense tumor anterolateral to the brain stem and posterior to clivus. (g-i) MRI T2WI axial section showing hyperintense tumor in the right incisural space causing distortion of the brain stem and producing mass effect.
SNI-11-215-g001.jpg
PMC7451164_01_SNI-11-215-g001.jpg
F1
Noncontrast computed tomography head [Figure 1a-c] revealed an isointense lesion situated anterolateral to the pons on the right side, behind the clivus. Meckel's cave. Magnetic resonance imaging (MRI) brain demonstrated a lesion which was hypodense on T1-weighted images and hyperdense on T2 and showed uniform intense enhancement [Figure 1 d to i and Figure 2].
(a-c) Contrast-enhanced magnetic resonance imaging (CEMRI) axial section showing contrast-enhancing lesion in the right incusral space causing mass effect on adjacent structures. (d-f) CEMRI coronal section showing tumor extending in the supra and infratentorial compartment and compressing medial part of temporal lobe and brain stem. (g-i) CEMRI sagittal section showing tumor anterolateral to the brain stem and posterior to clivus.
SNI-11-215-g002.jpg
PMC7451164_01_SNI-11-215-g002.jpg
F2
Meckel's cave. Magnetic resonance imaging (MRI) brain demonstrated a lesion which was hypodense on T1-weighted images and hyperdense on T2 and showed uniform intense enhancement [Figure 1 d to i and Figure 2].
(a and b) Contrast-enhanced magnetic resonance (CEMR) coronal T1WI showing area of encephalomalacia from where temporal lobe was partially excised. No tumor is visible. (c) CEMR axial T1WI showing complete tumor excision. (d and e) MR axial fluid-attenuated inversion recovery image showing area of temporal lobe excision. The surgical corridor is visible. (f) MR axial T2WI showing area of encephalomalacia in temporal lobe and complete tumor excision.
SNI-11-215-g003.jpg
PMC7451164_01_SNI-11-215-g003.jpg
F3
Postoperative MRI brain [Figure 3a-f] showed a complete tumor excision.
Schematic axial diagram showing the location of tumor and its relation with surrounding structures.
SNI-11-215-g004.jpg
PMC7451164_01_SNI-11-215-g004.jpg
F4
The fourth nerve may be displaced or occasionally encased in such a meningioma, but its relation to the undersurface of the tentorial edge is usually maintained [Figures 4 and 5].
Schematic coronal diagram showing the location of tumor and its relation with surrounding structures and also shown is the surgical corridor available after inferior temporal resection.
SNI-11-215-g005.jpg
PMC7451164_01_SNI-11-215-g005.jpg
F5
The fourth nerve may be displaced or occasionally encased in such a meningioma, but its relation to the undersurface of the tentorial edge is usually maintained [Figures 4 and 5].