28-year-old female, unresponsive, encephalopathy, weakness. Brain MRI:The ventricles and sulci are normal in size. The cerebellar tonsils are in normal position. There are no masses, mass effect or midline shift. The pituitary gland is normal in size. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem or cerebellar infarction. No diffusion-weighted abnormalities are identified. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear. Fluid is layering within the pharynx and larynx, secondary to intubation.Brain MRA:There is antegrade flow within the distal bilateral vertebral arteries, within the basilar artery, distal bilateral internal carotid arteries and carotid siphons and bilateral anterior, middle and posterior cerebral arteries. No arterial stenoses, occlusions or aneurysms are identified. No arteriovenous malformations are identified and there is no evidence for cerebral vasculitis. Cervical spine MRI:Straightening of the spine is likely positional. The cervical vertebral bodies are appropriate in height. Bone marrow signal is within normal limits. Paraspinal contents are unremarkable.The cervical spinal cord has normal signal characteristics and overall morphology.C2-3: No significant compromise to the spinal canal or neural foramina, unchanged.C3-4: No significant compromise to the spinal canal or neural foramina, unchanged.C4-5: No significant compromise to the spinal canal or neural foramina, unchanged.C5-6: No significant compromise to the spinal canal or neural foramina, unchanged.C6-7: Minimal dorsal annular fissure and small central protrusion. No significant compromise to the spinal canal or neural foramina. These findings are unchanged.C7-T1: No significant compromise to the spinal canal or neural foramina, unchanged.
1.Negative noncontrast brain MRI.2.Negative noncontrast brain MRA.3.C6-7: Minimal dorsal annular fissure and small central protrusion. No significant compromise to the spinal canal or neural foramina. These findings are unchanged.