Qianquan Ma1, Chao Wu1, Jia Zhang1, Xiaoliang Yin1, Chenlong Yang1, Yu Si1, Haibo Wu2, Qiang Zhao2, Ying Liu2, Huishu Yuan2, Qing Chang3, Jingcheng Xie1, Jun Yang1, Jianjun Sun4. 1. Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, China. 2. Department of Radiology, Peking University Third Hospital, Peking University, Beijing, China. 3. Department of Pathology, Peking University Third Hospital, Peking University, Beijing, China. 4. Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, China. Electronic address: sunjianjun@bjmu.edu.cn.
Abstract
BACKGROUND: Sacral cysts are classically divided into Tarlov cysts and meningeal diverticula. However, the pathogenesis of sacral cysts remains unclear. This study aimed to clarify a novel type of sacral extradural spinal meningeal cyst with a specific arachnoidal structure. METHODS: Nine patients with prophylactic diverticula were included in the study. All patients underwent MRI preoperative reconstruction and traditional neck transfixation. RESULTS: All patients presented with more than one symptom. The major symptom was lower extremity pain, followed by lower extremity numbness (77.8%, 7/9), lower extremity weakness (55.6%, 5/9), bowel/bladder and sexual dysfunction (55.6%, 5/9), and tenesmus (22.2%, 2/9). After long-term follow-up, the outcome was classified as improved in 9 patients (100%). CONCLUSIONS: The clinical findings of this study illustrate a special subtype and may help explain the mechanism of sacral cyst formation.
BACKGROUND: Sacral cysts are classically divided into Tarlov cysts and meningeal diverticula. However, the pathogenesis of sacral cysts remains unclear. This study aimed to clarify a novel type of sacral extradural spinal meningeal cyst with a specific arachnoidal structure. METHODS: Nine patients with prophylactic diverticula were included in the study. All patients underwent MRI preoperative reconstruction and traditional neck transfixation. RESULTS: All patients presented with more than one symptom. The major symptom was lower extremity pain, followed by lower extremity numbness (77.8%, 7/9), lower extremity weakness (55.6%, 5/9), bowel/bladder and sexual dysfunction (55.6%, 5/9), and tenesmus (22.2%, 2/9). After long-term follow-up, the outcome was classified as improved in 9 patients (100%). CONCLUSIONS: The clinical findings of this study illustrate a special subtype and may help explain the mechanism of sacral cyst formation.