Figure 1. CT and MRI of patient 1.
A. CT showed a solid lesion in the right lateral ventricle, with fat component (hypodense). (B., C., D.) Brain MRI (axial T1WI and T2WI, gadolinium-enhanced T1WI) showed an irregular mass measuring 4.5cm in diameter with a definite boundary in the right lateral ventricle. The mass had heterogeneous components: neuronal (hypo- to isointensity on T1WI and isointensity on T2WI) and fat (strongly T1WI hyperintensity and moderately T2WI hyperintensity). Contrast enhancement of the mass was slight and inhomogeneous.
