Preschooler with emesis Pediatric Imaging Neurological December 7, 2022October 13, 2022 Sagittal T1 MRI without (left) and with (right) contrast of the brain shows a hypointense signal mass filling and distending the fourth ventricle that enhances homogeneously. The diagnosis was medulloblastoma. Related Published December 7, 2022October 13, 2022