Altered mental status and history of leukemia. Surgical planning for biopsy of the intracranial lesions. There are numerous subcentimeter supratentorial and infratentorial lesions, some of which are perhaps minimally larger and have increased associated surrounding vasogenic edema. For example, a left superior frontal gyrus lesions measures up to 5 mm, previously 4 mm. Otherwise, the majority of the lesions have not appreciably changed in size. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are unchanged.
Preoperative MRI demonstrates numerous subcentimeter supratentorial and infratentorial lesions, some of which are perhaps minimally larger and have increased associated surrounding vasogenic edema. 