Preoperative T2W sagittal images.MRI of the thoracic spine T2W sagittal images revealed an approximately 2.9 x 3.8 x 3.7 cm extradural midline mass centered in the posterior elements of T5 from T3-T4 to T6-T7. The mass extended into the spinal canal with severe thoracic cord compression. There was increased signal within the spinal cord from the lower T4 level to the upper T6 level consistent with edema. No extension into the neural foramina was noted.