 MRI brain:The patient is status post Chiari I decompression surgery with resection of the C1 arch and posterior fossa craniectomy. CSF flow at the level of foramen magnum is appropriate and stable.There is patchy T2 and FLAIR signal hyperintensity within the pons. This is unchanged since the prior exam.The CSF spaces are appropriate for the patient's stated age with no midline shift. No abnormal mass lesions are appreciated intracranially. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.MRI cervical spine:The cervical vertebral bodies are appropriate in overall alignment and height. The cervical spinal cord has normal signal characteristics and overall morphology. At C2-3 there is no significant compromise to the spinal canal or neural foramina.At C3-4 there is no significant compromise to the spinal canal or neural foramina.At C4-5 there is no significant compromise to the spinal canal or neural foramina.At C5-6 there is no significant compromise to the spinal canal or neural foramina.At C6-7 there is no significant compromise to the spinal canal or neural foramina.At C7-T1 there is no significant compromise to the spinal canal or neural foramina.The vertebral artery flow voids appear to be intact.Thoracic spine:The thoracic vertebral bodies are appropriate in the overall alignment and height. The thoracic spinal cord has normal signal characteristics and overall morphology. There is no compromise of thoracic spinal canal or exiting nerve roots. There is redemonstration of a small right paramedian disc protrusion at the T11-T12 level which is stable compared to prior exam. There is a Schmorl's node present at T11-T12.Lumbar spine:Five lumbar type vertebral bodies are presumed to be present which are appropriate in overall alignment and height. The conus medullaris on sagittal imaging is grossly intact. There is a well-circumscribed lesion present within the L3 vertebral body which is bright on T1 and suppresses on the inversion recovery images which most likely represents a vertebral body hemangioma. It is stable compared to the prior exam.At L5-S1 there is no significant compromise to spinal canal or neural foramina.At L4-5 there is no significant compromise to spinal canal or neural foramina.At L3-4 there is no significant compromise to spinal canal or neural foramina.At L2-3 there is no significant compromise to spinal canal or neural foramina.At L1-2 there is no significant compromise to spinal canal or neural foramina.
1.The patient is status post Chiari I decompression.2.There is no evidence for syrinx or ventriculomegaly.3.There are mild degenerative changes present in the lower thoracic spine. These are stable compared to the prior exam.