PMC4754590_01
A : Preoperative T2-weighted magnetic resonance imaging revealed Wiltze type 3 spondylolisthesis and spinal stenosis at L3-4. B and C : Lomber CT after surgery shows posterior enstrumantation at L3-4 with pedicle screws (B) and pneumorrhachis due to dural tear (C).
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F1
Imaging studies revealed degenerative spondylolisthesis and spinal stenosis at L3-4 (Fig. 1A). The patients underwent decompressive laminectomy and an excessive CSF leakage was occured after an accidental dural tear during posterior instrumentation (Fig. 1B, C).
Right sided sylvian-periinsular subarachnoid hemorrhage (A and B) and pneumocephalus (B) in postoperative computed tomography of the brain. Right Carotid angiography demonstrates no vascular abnormality (C).
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F2
Computed tomography of the brain showed sylvian-periinsular subarachnoid hemorrhage and pneumocephalus in the right cerebral hemisphere (Fig. 2A, B). Cerebral angiography was performed in order to exclude an underlying aneurysmal pathology, which did not reveal any vascular abnormality (Fig. 2C).