Fig. 7
A 5-year-old male patient complaining from headache and vomiting. Axial T1 (a), axial T2 (b), axial FLAIR (c), coronal T1 post-contrast (d), sagittal T1 post contrast (e)—posterior fossa SOL seen filling 4th ventricle and extending through right exit foramina to right cerebellopontine cistern, mass measured 23 × 19 × 44 mm at its maximum AP, width, and CC dimensions showed heterogeneous contrast enhancement (d), (e). Axial DWI (f), axial ADC (g)—the lesion showed restricted diffusion, ADC ratio—1.5, ADC values of the lesion—(1.221, 1.225, 1.226) × 103 mm2/s, average 1.225 × 103 mm2/s, ADC value of the normal cerebellum (0.775, 0.781, 0.785) × 103, average 0.781 × 103 mm2/s consistent with ependymoma but by histopathological examination after surgical excision revealed astrocytoma