PMC4287918_01
Axial section of MRI images - Case 1
SNI-5-183-g001.jpg
PMC4287918_01_SNI-5-183-g001.jpg
F1
Magnetic resonance imaging (MRI) brain revealed large intraventricular tumor in right lateral ventricle at the foramen Munro level [Figure 1].
H and E staining showing histological features of neurocytoma - Case 1
SNI-5-183-g002.jpg
PMC4287918_01_SNI-5-183-g002.jpg
F2
Postoperative histopathological report showed monomorphic round cells arranged in sheets and with honey-comb pattern [Figure 2].
Tumor cells showing strong positivity for synaptophysin
SNI-5-183-g003.jpg
PMC4287918_01_SNI-5-183-g003.jpg
F3
Immunohistochemistry was strongly positive for synaptophysin [Figure 3].
Ki67 immunostaining: proliferative index of 4%
SNI-5-183-g004.jpg
PMC4287918_01_SNI-5-183-g004.jpg
F4
Since the MIB labeling index was 4%, the tumor was referred to as "Atypical Central Neurocytoma" with high recurrence potential [Figure 4].
PMC4287918_02
Axial section of MRI images of - Case 2
SNI-5-183-g005.jpg
PMC4287918_02_SNI-5-183-g005.jpg
F5
MRI revealed a fairly well defined, mixed intense, heterogeneously enhancing lesion with restriction on diffusion weighted imaging (DWI), and with focal areas of cystic degeneration seen in the body and trigone of left lateral ventricle [Figure 5].
H and E staining showing histological features of neurocytoma - Case 2
SNI-5-183-g006.jpg
PMC4287918_02_SNI-5-183-g006.jpg
F6
Histopathology report showed cellular tumor composed of uniform round cells arranged in sheets and honey comb pattern [Figure 6].