Workup/Staging Flashcards
1
Q
What is the workup for pts with suspected OPG?
A
Suspected OPG workup: H&P (including a neuro-ophthalmic exam with a quantitative visual acuity assessment), MRI brain and orbits, genetic evaluation, and baseline endocrinology
2
Q
What is the DDx of an optic nerve mass?
A
Optic neuritis, glioma, RB, optic nerve meningioma, lymphoma, hamartoma
3
Q
How do OPGs appear on MRI?
A
On MRI, OPGs appear as well-circumscribed, homogeneously enhancing lesions (isointense on T1 and iso- to hyperintense on T2). Contrast enhancement and presence of cysts are more common in sporadic OPGs than in NF-1 associated.
4
Q
Is Bx necessary for Dx?
A
No. Imaging and the clinical exam are sufficient for OPG Dx.
