case_images: PMC11809395_01
case_images: Initial presentation of the child with ptosis, exotropia and mydriasis in his left eye.
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case_images: Upon physical examination, the child exhibited ptosis, exotropia, and mydriasis in the left eye (Figure 1).
case_images: T1-weighted MRI with gadolinium contrast and fat saturation; (A) coronal View, (B) axial view, an ovoid isointense mass, approximately 5.5 mm in diameter (outlined in the white box), is located within the third cranial nerve at the superior aspect of the cavernous sinus, cranial to the internal carotid artery (ICA). The mass demonstrates homogeneous enhancement following gadolinium administration, consistent with a contrast-enhancing lesion. There is no significant mass effect on adjacent structures.
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case_images: On T1-weighted images, the lesion exhibited an isointense signal, further detailed the lesion (Figure 2).
case_images: High-resolution 3D T2-weighted MRI sequence using the Vista protocol-axial view: an ovoid hyperintense mass, measuring approximately 5.5 mm in diameter (outlined in the white box) with diffuse enhancement.
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case_images: High-resolution 3D T2-weighted MRI, obtained with a fine 0.5 mm slice thickness, revealed the lesion as hyperintense and homogeneous (Figure 3).
case_images: Orbital MRI - T1 and T2 weighted, axial view without gadolinium: both optic nerves are normal and symmetrical, with no abnormal enhancement. The bilateral eye globes and lenses are normal. The structures of the orbital cavities, including the extraocular muscles and eyeballs, are symmetric with no signs of proptosis.
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case_images: Orbital MRI was also requested but revealed no detected anomalies (Figure 4).