Chiari malformation, no history of surgery. Minimal central canal prominence at C5-C6. Headaches. MRI brain: Again seen is caudal descent of the cerebellar tonsils which are peg-like in morphology and measuring up to 10 to11 mm below the foramen magnum on the right. Partial effacement of the CSF spaces at the foramen magnum is not appreciably changed. Biphasic CSF flow is present ventrally and dorsally, although diminished slightly posteriorly, as seen before. No parenchymal signal abnormality. No evidence of intracranial mass or mass effect. No evidence of infarct or hemorrhage. Ventricles and sulci are within normal limits. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable. Subcentimeter cyst in the pineal gland is unchanged.MRI cervical spine: There is no discrete syrinx in the cervical cord. Minimal prominence of the central canal at the C5-C6 level is unchanged. There is straightening of the cervical spinal curvature which may be in part positional. Alignment is otherwise maintained. Vertebral body heights and disc heights are well-maintained. Bone marrow signal is unremarkable. There is no significant disk bulge, herniation, spinal canal or foraminal stenosis within the cervical spine.
1.Unchanged findings of Chiari I malformation. No new intracranial abnormalities.2.Minimal central canal prominence at C5-C6 without evidence of syrinx.