There is a caudal descent of the cerebellar peg-like tonsils about 15 mm through the foramen magnum (below McRae line) which appears crowded. The inferior tip of the herniated tonsil seen at the level of the lower endplate of the C2 vertebral body.
The CSF spaces are of normal size. No hydrocephalus.
No shift of midline. No infarction or bleeding.
No intrinsic cord pathology. No syringohydromyelia. No tethered cord or spinal myelomeningocele. No vertebral body anomaly.