PMC7468187_01
(a): Computed tomography (bone window, axial view) showing amorphous calcification of the right posterior clinoid process, (b): magnetic resonance imaging (MRI) susceptibility weighted imaging showing low signal within the lesion, (c): MRI T2-weighted image (axial view) showing low intensity of the lesion with oculomotor nerve entering posteriorly.
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F1
Computed tomography (CT) scan demonstrated an amorphous calcified mass arising from the enlarged right posterior clinoid process, projecting into the anterior aspect of right quadrigeminal cistern [Figure 1]. Magnetic resonance imaging (MRI) confirmed focal enlargement of the right posterior clinoid process, with minimal peripheral enhancement [Figure 1].
(a): Magnetic resonance imaging (MRI) noncontrast T1-weighted image (axial view) demonstrating heterogeneous intermediate to low intensity, (b): MRI postcontrast T1-weighted image (axial view) demonstrating minimal enhancement, (c): MRI postcontrast T1-weighted image (sagittal view) demonstrating minimal contrast enhancement, (d): MRI T2-weighted image (coronal view) showing low signal intensity and its relationship with the oculomotor nerve.
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F2
T2 signal and low signal on susceptibility weighted imaging [Figure 2].