Pre- and postoperative transverse T2WI of an off-midline–intraventricular (subtype C) WNT-subgroup medulloblastoma. Pre- and postoperative transverse T2WI.

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Presentation transcript:

Pre- and postoperative transverse T2WI of an off-midline–intraventricular (subtype C) WNT-subgroup medulloblastoma. Pre- and postoperative transverse T2WI of an off-midline–intraventricular (subtype C) WNT-subgroup medulloblastoma. A right-sided predominance is evident in the preoperative images, but the tumor has a substantial intraventricular component (A–D). This pattern is highlighted by the involvement of the right foramen of Luschka (LS-1c = R1) and by invasion of the right dentate nucleus and right superior cerebellar peduncle (LS-2c = R2). Preoperative imaging data suggest that overall, this tumor is off-midline, with a right-sided predominance (LS-3c = R3). The postoperative damage pattern is identical, with lesions in the right dentate nucleus and superior cerebellar peduncle (LS-4c = R2) and a right PICA territory infarction (E–H). The aggregate laterality score indicates a clear right-sided laterality (LS-5c = R5). Z. Patay et al. AJNR Am J Neuroradiol 2015;36:2386-2393 ©2015 by American Society of Neuroradiology