| Synovial Cyst Forming Encircling Mass Around the Traversing Nerve Root in A Patient with Far-advanced Degenerative Spondylolisthesis |
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Jae Young Choi, M.D.1, Se Hun Kim, M.D. and Kyeong Hoon Sung, M.D.1. |
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Department of Neurosurgery, 21st Century Hospital, Seoul, Korea1, Department of Neuropathology, Yonsei University College of Medicine, Seoul, Korea |
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| Abstract |
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The authors report on a 56-year-old woman who presented with radicular symptoms and neurogenic claudication caused by far-advanced degenerative spondylolisthesis and concomitant synovial cyst, which forms encircling mass around the traversing nerve root. Spinal magnetic resonance imaging(MRI) demonstrated a far-advanced degenerative spondylolisthesis at the level of L4-5. Axial MRI on T2-weighted images revealed an abnormal signal with double contour that was located along the margin of the right L5 pedicle and appeared to adhere to the dural sac. During surgery, a 1.5cm encircling mass around the right L5 traversing nerve root was identified and complete excision was achieved. Histopathologic examination revealed a synovial cyst.
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| Keywords:
Degenerative spondylolisthesis, Facet joint, Synovial cyst |
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