MRI BRAIN WITH AND WITHOUT CONTRAST:
CLINICAL HISTORY: 19-year-old woman, severe headache postpartum, concern for acute intracranial process and dural venous sinus thrombosis.
FINDINGS:
Parenchyma: No acute hemorrhage, infarction, mass, or abnormal intraparenchymal enhancement.
Orbits: Normal.
Visualized paranasal sinuses: Small mucous retention cyst in the left maxillary sinus.
Mastoid air cells: Clear.
Bones: Normal.
Additional comment: MRV and postcontrast BRAVO images show engorged, widely patent dural venous sinuses.
IMPRESSION:
1. Diffuse pachymeningeal enhancement and cerebral venous engorgement, consistent with changes of intracranial hypotension.
2. Diffusely enlarged pituitary gland, mostly due to recent gravid/postpartum state, however degree of enlargement is likely to be exaggerated by intracranial hypotension.
3. No dural venous sinus thrombosis.
4. No evidence of infarct, mass effect, hemorrhage, or abnormal intraparenchymal enhancement.