Chiari malformation status post surgery and schwannomatosis: worsening left leg pain with foot and calf numbness/tingling; new right leg pain. Brain: There is interval evolution of postoperative findings related to Chiari decompression. The cerebellar tonsils display unchanged configurations. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are unchanged in size and configuration. Spine: There is further slight interval decrease in size of the cervical spinal cord syrinx. There is unchanged focus of high T2 signal and slight volume loss in the right hemicord at the C2-3 level, compatible with myelomalacia. There is unchanged multilevel spinal nerve root expansion with associated neural foramen widening throughout the cervical, thoracic, and lumbosacral spine. There is no associated spinal cord compression. The vertebral body heights are preserved. There is unchanged alignment of the vertebral column, with lack of thoracic kyphosis. There is a disc bulge at T12-L1. The vertebral bone marrow signal is unremarkable.
1. Interval evolution of postoperative findings related to Chiari decompression with further slight decrease in size of the cervical syrinx.2. Extensive schwannomatosis throughout the spine.