Comparison was made with previous MRI.
Previously demonstrated left frontal horn, lateral ventricle, unenhancing mass lesion again noted, with the size and extent essentially unchanged, measuring approximately 9mm in depth.
Established cerebellar and left basal nuclei infarctions, as well as multiple foci of chronic ischemia again noted, stable.
No further abnormalities or significant interval change.
Conclusion: When compared with the MRI from last year, there is no significant change in the size of the left lateral ventricle frontal horn lesion, most likely representing a subependymoma.