Fig. 6
An 8-year-old female patient complaining of vomiting. Axial T1 (a), axial T2 (b), axial FLAIR (c), coronal T1 post-contrast (d), sagittal T1 post-contrast (e)—posterior fossa intraventricular SOL seen filling the fourth ventricle and extending to the right cerebellum and left occipital lobe, measured 36 × 60 × 34 mm at its AP, width, and CC diameters. It showed heterogeneous predominantly low T1 SI (a), high SI at T2 WI (b), and FLAIR sequence (c) with cystic component, avid, and heterogenous enhancement after IV contrast injection (d), (e). Axial DWI (f), Axial ADC (g)—the lesion showed restricted diffusion, ADC ratio—0.7, ADC values of the lesion (0.597, 0.594, 0.543) × 103 mm2/s, average 0.597 × 103 mm2/s, ADC value of the normal cerebellum—(0.860, 0.863, 0.869) × 103, average 0.863 × 103 mm2/s consistent with medulloblastoma confirmed by histopathology