Fig. 1

CT bone window (a–b) displayed an intraspinal tumor with high and uneven density on the dorsal side of the canal at the T4 level. Notice that there was an interspace between the neoplasm and lamina. MRI (c–e) revealed an intradural extramedullary mass, which pushed the spinal cord dorsally without obvious compression. The tumor showed hypointensity on both T1 and T2 images compared to the spinal cord. f Grossly, the tumor was a firm entity (arrow) with adhesion to the adjacent dura and arachnoid (arrowhead). Follow-up MRI images (g–h) showed no evidence of recurrence