Case 6. Images from a 56-year-old male who presented with severe right leg pain. A: Para-sagittal MRI imaging (T1) showed the obliteration of the normal increased signal intensity fat (arrow). B,C: Para-sagittal and axial reconstruction CT-discograms showed an intraforaminal herniated disc (arrow) at the L5-S1 level. D: A CT-discogram obtained at L5-S1 showing partial resection in the L4 lamina (arrow). E: Postoperative 3-D reconstruction showing the oval fenestration in the L4 lamina.