6-year-old with history of a right temporal cyst. Interval follow-up exam. There is a juxtaventricular cystic lesion that measures up to 15 mm in the right temporal lobe immediately superior to the hippocampus. There is persistent adjacent mild high T2 signal, but no associated enhancement. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is partial opacification of the left sphenoid and maxillary sinuses.
Stable appearance of the cystic lesion in the right temporal lobe, which likely represents a form of benign post-injury, such as a porencephalic cyst, although no direct communication with the ventricular system is discernible, versus a development cyst, such as an ependymal or neuroglial cyst. A low-grade neoplasm is less likely.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.