Case 2.A, CT image from case 2, showing a small soft tissue mass at the apex of the right orbit (arrow). Case 2.A, CT image from case 2, showing a small.

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Presentation transcript:

Case 2.A, CT image from case 2, showing a small soft tissue mass at the apex of the right orbit (arrow). Case 2.A, CT image from case 2, showing a small soft tissue mass at the apex of the right orbit (arrow). This image is a prediagnostic scan obtained before the patient’s referral to our center. The nerve enlargement is subtle and is difficult to appreciate because of the relatively thick sections. This abnormality was identified only on retrospective review.B, T1-weighted MR image, reconstructed along the optic pathways, showing slight widening of the soft tissue of the optic nerve–optic nerve sheath complex at the orbital apex. The abnormality is still subtle and could easily be overlooked.C, Coronal T1-weighted MR image also showing subtle increase in the size of the soft tissue signal intensity within the right optic canal.D, Postcontrast T1-weighted MR image, reconstructed along the optic pathways, showing enhancement surrounding the optic nerve within the optic canal (large arrows). There is en-plaque growth along the walls of the sulcus chiasmaticus, giving a “rose thorn” appearance (small arrows). Alan Jackson et al. AJNR Am J Neuroradiol 2003;24:1167-1170 ©2003 by American Society of Neuroradiology