 There has been interval evolution of the signal characteristics of the subcentimeter lesion within anterior pituitary lobe, including decreased T1 hyperintensity. The pituitary stalk remains midline. There is no suprasellar extension or optic chiasm abutment. There is no abnormal intracranial enhancement. The ventricles are stable in size of configuration. The major cerebral flow voids are intact. The extracranial structures are unremarkable.
Interval change in the signal characteristics of the subcentimeter pituitary lesion, suggestive of evolution of prior intratumoral hemorrhage.