Optic nerve glioma vs Optic nerve sheath meningioma

Optic nerve glioma vs Optic nerve sheath meningioma

	Optic nerve glioma	Optic nerve sheath meningioma
1	Slow progression, painless loss of vision
2	Children <5 old="" p="" years="">	Mid-age Female
3	Central scotoma	No central scotoma
4	Widen optic nerve canal in 90%	+/- widening, but sometimes narrowing due to hyperostosis
5	Rarely has calcification, happens after radiotherapy	a/w calcification
6	No hyperostosis	a/w Hyperostosis
7	Kinking, buckling of optic nerve, smooth outline	Straight optic nerve, eccentric thickening
8	Contrast enhanced less	Intense contrast enhancement
9	Variable enhancement	Enhancement of tumor surrounding the non-enhanced optic nerve – “Tram-track sign”
10	May be bilateral => consider NF-1	Unilateral. a/w NF-2
11	T1 intermediate, T2 hyperintense	T1, T2 signal similar to optic nerve

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