Newborn with an abnormal bump in the posterior midline at the skull base Pediatric Imaging Neurological September 7, 2022July 14, 2022 Axial CT without contrast of the cervical spine shows a defect in the posterior skull at the craniocervical junction with cerebellar tissue herniating posteriorly through it. The diagnosis was Chiari III malformation with an occipital encephalocele. Related Published September 7, 2022July 14, 2022