Intradural Disk Herniation Mimicking a Spinal Tumor: Radiologic Imaging, Pathogenesis, and Operative Management

Figure 4

(a) On dorsal dural incision, a mass is observed between the nerve rootlets. (b) A dissector and sucker were used to carefully peel the adherent nerve rootlets away from the disk fragment. (c) The disk fragment was resected by the piecemeal technique. (d) A round defect of the ventral dura and a tear in the disk annulus are shown. The dural tissue around the defect is thickened (arrow). (e) The tear in the annulus was confirmed by inserting the tip of bipolar forceps into the tear. (f) After trimming the thickened margin, the dural defect was repaired using nylon sutures.

(a)

(b)

(c)

(d)

(e)

(f)