School ager with vomiting at night Pediatric Imaging Neurological September 4, 2022July 14, 2022 Sagittal midline 2D reconstruction of CT without contrast of the brain shows the cerebellar tonsils to be herniating > 5 mm beneath the foramen magnum. The diagnosis was Chiari I malformation. Related Published September 4, 2022July 14, 2022