Ogata Tadanori, Matsuda Yoshiro, Hino Masayuki, Kawatani Yoshiyuki, Sogabe Hiroto, Yamamoto Haruyasu
Department of Orthopaedic Surgery, Ehime University School of Medicine, Ehime 791-0295, Japan.
J Spinal Disord Tech. 2004 Aug;17(4):339-42. doi: 10.1097/01.bsd.0000090579.08296.a2.
A simple bone cyst located in the spine is rare. In the current work, we have documented the first case of a simple bone cyst located in the pedicle of the lumbar vertebra. The patient was a 50-year-old woman with low back pain. Radiographs of the lumbar region of the spine showed a well circumscribed radiolucent lesion with surrounding bone sclerosis in the right pedicle of L3. Computed tomography (CT) showed that the right pedicle was completely occupied by the cyst and slightly expanded. The cystic lesion extended to both the vertebral body and the lamina. T1-weighted magnetic resonance imaging (MRI) showed uniform low intensity, and T2-weighted MRI showed uniform very high intensity. Signal enhancement by gadolinium diethylenetriaminepenta-acetic acid was not observed in the lesion. During the operation, the cavity of the cyst was filled with 2 mL of serosanguinous fluid. Subsequent histologic examination showed a thin layer of connective tissue in the inner surface of the cyst.
位于脊柱的单纯性骨囊肿很罕见。在当前研究中，我们记录了首例位于腰椎椎弓根的单纯性骨囊肿病例。患者为一名50岁女性，有腰痛症状。腰椎区域的X线片显示L3右侧椎弓根有一个边界清晰的透光性病变，周围有骨质硬化。计算机断层扫描（CT）显示右侧椎弓根完全被囊肿占据并略有扩张。囊性病变延伸至椎体和椎板。T1加权磁共振成像（MRI）显示均匀低信号，T2加权MRI显示均匀高信号。病变部位未观察到钆喷酸葡胺增强信号。手术过程中，囊肿腔内充满2毫升血性浆液。随后的组织学检查显示囊肿内表面有一层薄的结缔组织。
