27-year-old female with head injury No evidence of hemorrhage, edema, mass-effect, midline shift or hydrocephalus. Cortical sulci, ventricular system and all CSF cisterns remain within normal limits.Images at the level of common magnum demonstrates crowding of brain parenchyma at the level of the foramina magnum with effacement of subarachnoid space. This is consistent with low position of cerebellar tonsils (Chiari malformation) which requires further evaluation with a dedicated MRI exam.Calvarium, mastoid air cells and very limited view of paranasal sinuses are unremarkable.
1.No evidence of acute post traumatic findings.2.Findings consistent with Chiari malformation which requires further evaluation with an MRI.