Anterior circulation: No flow-limiting stenosis or aneurysm.
Posterior circulation: No flow-limiting stenosis or aneurysm.
Dural venous sinuses: Patent.
Additional comment: None.
Normal bolus perfusion. Nonspecific ASL signal in the region of the torcula, no mass or vascular abnormality seen in this region.
1. No evidence of acute infarct.
2. Sellar mass with suprasellar extension most consistent with a cystic macroadenoma measuring approximately 1.6 x 1.2 x 1.5 cm with evidence of intralesional hemorrhage, consistent with pituitary apoplexy. There is mild mass effect and superior displacement of the optic chiasm.
3. Mildly asymmetric enhancement of the extracranial, mastoid, and labyrinthine segments of the left facial nerve, as well as abnormal enhancement of the cisternal segment of the left facial nerve in the IAC fundus. Findings are compatible with inflammatory changes related to Bell's palsy, or Ramsay Hunt syndrome for which there is clinical concern in this patient.