 The exam is mildly motion degraded. The right cerebellar tonsil is slightly low-lying without meeting strict criteria for Chiari I malformation. There is no acute infarct, mass effect, or cerebral edema. The ventricles and basal cisterns are normal in size and configuration with slight asymmetric diffuse prominence of the right lateral ventricle as compared to the left, which is felt to be within normal limits of variation. There is no midline shift or herniation. There is trace bilateral maxillary sinus mucosal thickening. There are nonspecific prominent cervical several lymph nodes and posterior nasopharyngeal adenoidal soft tissue, likely reactive in this age group, although correlation with direct inspection is recommended. The skull and extracranial soft tissues are otherwise unremarkable.
Low-lying right cerebellar tonsil without meeting strict criteria for Chiari I malformation. Otherwise, unremarkable exam.