Fig. 1

Magnet resonance imaging of the tumors found in the reported cases. A Multiple inhomogeneously contrast-enhancing tumors with a maximum expansion of 10 × 20 mm and B an infratentorial tumor manifestation in the right cerebellopontine angle with extension in the internal auditory meatus were found in the first case. C Follow-up contrast enhanced T1 MRI scan of the first case 3 years after diagnosis showing a stable residual in the right lateral ventricle adjacent to the septum pellucidum without contrast enhancement. D T2 flair MRI scan of case 3 at initial diagnosis showing a large heterogeneous mass arising from the deep white matter of the posterior left frontal lobe with extension into the left lateral ventricle. E and F Coronal T2 flair MRI images of case two attained approximately 2 years after initial diagnosis showing a multinodular recurrence in close proximity to the left lateral ventricle. Contrast enhanced T1 (G) and T2 flair (H) MRI scans of case 3 at initial diagnosis showing a large tumor involving the left parietal, occipital and temporal lobe with extensive intratumoral hemorrhage. I Follow-up MRI scan six months after initial therapy showing a progression of the diffuse contrast enhancing residual tumor