28 thickening of the optic nerve

28 Thickening of the Optic Nerve

CLINICAL IMAGAGINGAN ATLAS OF DIFFERENTIAL DAIGNOSIS

EISENBERG

DR. Muhammad Bin Zulfiqar PGR-FCPS III SIMS/SHL

• Fig SK 28-1 Optic nerve glioma. (A) Sagittal and (B) coronal T1-weighted MR scans show involvement of the chiasm and left optic nerve.

• Fig SK 28-2 Optic nerve glioma. Diffuse enlargement of the left optic nerve (arrows) in an 8-year-old girl.1

• Fig SK 28-3 Optic nerve sheath meningioma. (A) Axial scan shows the enhancing tumor (white arrows) along the entire length of the intraorbital optic nerve (black arrows). Note the intracranial portion of the tumor. (B) Coronal scan demonstrates the meningioma (white arrows) surrounding the optic nerve.1

• Fig SK 28-4 Cyst of optic nerve sheath. Large, smoothly marginated retrobulbar mass (arrows) that produced proptosis in this 43-year-old man.1

• Fig SK 28-5 Optic neuritis. (A) Axial fat-suppressed and (B) coronal postcontrast T1-weighted images show a swollen and enhancing left optic nerve (arrows) secondary to multiple sclerosis.6