Neurofibromatosis type I. Evaluate myelomeningocele status post repair, thoracic dural ectasia, yearly follow-up. Susceptibility artifact from spinal hardware limits evaluation for possible signal abnormalities in the spinal cord. There are postoperative findings related to attempted myelomeningocele obliteration and scoliosis fixation with stabilizing rods and laminar hooks with unchanged moderate levo thoracic scoliosis. There is a fluid collection enclosed by an expanded thecal sac that extends into the right thoracic cavity via expanded right T2-3 through T6-7 neural foramina. The fluid collection appears to be unchanged in size, measuring up to 13 x 5.3 x 8 cm (CC x AP x TR), previously 12.6 x 5.3 x 7.9 cm. The thoracic spinal cord is incompletely visualized; however, there is suggestion of the thoracic spinal cord extending extraspinally into the medial aspect of the fluid collection. There is stable associated mass effect on the right lung and the esophagus. There is unchanged scalloping of multiple thoracic vertebral bodies without loss of height. The portions of the spinal cord that are not obscured by artifact display normal signal characteristics. There is no evidence of mass lesions. The cerebellar tonsils appear to be mildly low-lying, which is unchanged.
Susceptibility artifact somewhat limits evaluation; however, there is no gross interval change in the right thoracic myelomeningocele. Other stigmata of neurofibromatosis 1 and associated postoperative findings are unchanged.