Pituitary lesion and Chiari one malformation: yearly follow up. Brain: There are unchanged low lying cerebellar tonsils that extend to the level of the tip of the dens with mildly blunted cerebrospinal fluid flow across the posterior foramen magnum and intact flow anteriorly. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.Pituitary: There is a cystic lesion within the pituitary that measures up to 13 mm in width, which is unchanged. There is unchanged slight deviation of the infundibulum to the right. The cavernous sinuses and optic apparatus are intact.
1. Unchanged stigmata of Chiari 1 malformation.2, Unchanged pituitary cyst.