 Compared to the previous study again seen is fusiform enhancing tissue along the posterior orbital segment of the left optic nerve sheath with extension posteriorly into the optic canal and superiorly along the posterior planum sphenoidale. There is a mild decrease in the size of the intraorbital component of the mass from 8 mm previously to 6 mm in the current study (measured in the coronal plane). It is difficult to assess the mass in the planum sphenoidale due to susceptibility artifact, but appears decreased from 4 mm in the previous study to 3 mm in the current study measured in the coronal plane. Again seen is mild distention of the optic nerve sheath with CSF anterior to the mass.
Mild interval decrease in size of left optic nerve sheath meningioma