Page 281 - Atlas of Small Animal CT and MRI

Cranial Nerves 271

Figure 2.10.6 Cranial Nerve II Meningioma (Feline) MR

(a) T2, TP (b) T1, TP (c) T1+C, TP

(d) T1+C, DP (e) T1+C, SP (f) GP, SP
8y FS Domestic Shorthair with left‐sided exophthalmos. There is a large T1 isointense, T2 mixed‐intensity mass in the left retrobulbar
space (a,b: arrow). The mass displaces the left eye rostrally and has eroded through the frontal, ethmoid, and lacrimal bones, compressing
the left frontal lobe axially (d: arrowheads). The mass intensely contrast enhances (c–e) and has a large central cavitary component (e).
Postmortem examination confirmed meningioma arising from the left optic nerve.

271