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Case 3: preoperative image A shows initial CVF at the left T11 neuroforamen (arrow), and postoperative image B shows recurrent CVF at the right T8 neuroforamen (arrow). Case 4: preoperative image C shows initial CVF at the left T7 neuroforamen (arrow), and postoperative image D shows recurrent CVF at the left T10 neuroforamen (arrow).
