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. 2021 Apr;10(4):1138–1168. doi: 10.21037/tp-20-285

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2021 Translational Pediatrics. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Male, 6 years old, diagnosis of medulloblastoma-Group 4. Brain MRI: T2WI, DWI and ADC map and T1WI post-contrast (A,B,C,D) show a well-delineated midline fourth ventricle and inferior vermian mass, compressing the brainstem anteriorly. The lesion has microcysts observed on T2WI (A) and restricted diffusion, confirmed in the ADC map (B,C). The lesion does not have significant enhancement, a characteristic feature of medulloblastoma-Group 4. ADC, apparent diffusion coefficient; DWI, diffusion weighted imaging; T1WI, T1-weighted image; T2WI, T2-weighted image.