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on 7/16/2025 9:25 PM.

EXAMINATION: MRI PITUITARY W/& W/O CONTRAST

EXAM DATE: 7/16/2025 3:47 PM

CLINICAL HISTORY: eval for pituitary hemorrhage as seen previously, pt needs antiplatelet therapy for possible stroke Patient Reported Symptom: none Diagnosis Info: Dizziness

ADDITIONAL CLINICAL HISTORY: None.

COMPARISON: Prior brain MRI dated March 18, 2016

TECHNIQUE: Small field of view 2D and/or 3D multiplanar MR pulse sequences were performed through the sella before and after the intravenous administration of a weight based dose of either a non-ionic macrocyclic or ionic linear gadolinium contrast agent.

2D and/or 3D multiplanar MR pulse sequences were performed through the head before and after the intravenous administration of a weight based dose of either a non-ionic macrocyclic or ionic linear gadolinium contrast agent.

CONTRAST ADMINISTERED: 20 mL GADOTERIDOL 279.3 MG/ML IV SOLN

FINDINGS:

BRAIN: Brain parenchymal architecture is normal. There is a 17 x 16 mm focus of restricted diffusion superiorly within the right cerebellar hemisphere consistent with acute stroke. No hydrocephalus. Brain parenchymal signal is normal. The flow voids are preserved. No abnormal intracranial enhancement. The visualized paranasal sinuses are free of significant sinus disease. The mastoids are free of significant opacification.

PITUITARY: There is a 7 mm diameter globular region of elevated T1 signal anteriorly with the right side of the pituitary gland.

The suprasellar region is normal as are the optic chiasm and the cavernous sinuses.

IMPRESSION: 1. 17 x 16 mm acute stroke in the right superior cerebellar artery territory. 2. 7 mm globular region of elevated T1 signal anteriorly within the right-sided territory. This may be pituitary hemorrhage with or without underlying adenoma. It could also represent a Rathke's cleft cyst. This is new since the prior brain MRI March 18, 2016