|
Fig 4. Patient 4.
A, Axial T2-weighted scan shows a huge extra-axial cyst (white arrows) with septation (black arrow) that displaces the corpus callosum posteriorly.
B, Axial FLAIR image in the same patient shows that the cyst fluid (open arrows) does not suppress and remains hyperintense compared with CSF. NE cyst was found at surgery. This lesion is unusual because of its supratentorial location and size. The rim of hyperintensity posteromedial to the cyst probably represents compressed brain, not the cyst wall itself, which is a single cell layer. The hyperin- tensity in the center of the lesion was not seen on any other images and is probably an artifact.
|