| 摘要: |
| ［摘要］ 目的 探讨腰5/骶1节段不同程度硬膜外脂肪增多的影像学特征。方法 收集75例腰5/骶1节段不同程度硬膜外脂肪增多患者的磁共振成像（MRI）影像资料，分析脂肪增多部位、形态特征以及硬膜囊盲端位置和受压特点。结果 所有患者硬膜外脂肪均呈绫带状，位于硬膜囊腹侧72例,背侧3例。轻度21例，仅2例（9.5%）硬膜囊受压，矩形1例，不规则1例，盲端随机位于S1椎体节段平面。中度31例，14例（45.2%）硬膜囊受压，不规则8例，“Y”形4例，三角形2例，24例（77.4%）盲管位于S1中部至L5下缘平面。重度23例，硬膜囊均明显受压（100.0%），表现为“Y”形9例，不规则形7例，星形3例，点线形3例，三角形1例,19例（82.6%）盲端约平于L5下缘平面。结论 腰5/骶1节段不同程度硬膜外脂肪增多MRI表现具有一定特征性，且分级越高，硬膜囊受压比例越高，认识这些征象，有助于提示临床注意。 |
| 关键词: 硬膜外脂肪增多症 腰椎 磁共振成像 |
| DOI：10.3969/j.issn.1674-3806.2020.12.19 |
| 分类号:R 445.2 |
| 基金项目: |
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| Imaging features of different degrees of epidural lipomatosis in L5/S1 segment |
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HUANG Ce, ZHANG Feng-yi, XIA Zhen-yuan, et al.
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Department of Radiology, the People′s Hospital of Tianlin County, Guangxi 533300, China
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| Abstract: |
| ［Abstract］ Objective To explore the imaging features of different degrees of epidural lipomatosis in L5/S1 segment. Methods The magnetic resonance imaging(MRI) data of 75 patients with different degrees of epidural lipomatosis in L5/S1 segment were collected, and the location and morphological characteristics of lipomatosis as well as the location and compression characteristics of the blind end of dural sac were analyzed. Results The imaging features of different degrees of epidural lipomatosis in L5/S1 segment in all the cases were in damask ribbons, among whom, the focus of 72 cases was located in the ventral side of dural sac and the focus of 3 cases in the dorsal side. There were 21 mild cases, including only 2 cases(9.5%) of dural sac compression, 1 case of rectangle and 1 case of irregularity, and the blind end was randomly located on S1 plane. There were 31 moderate cases, including 14 cases(45.2%) of dural sac compression, 8 cases of irregularity, 4 cases of “Y” shape, 2 cases of triangle, and the blind tubes of 24 cases(77.4%) were located in the middle of S1 to the lower edge of L5. There were 23 severe cases, whose dural sacs were obviously compressed(100.0%), showing “Y” shape in 9 cases, irregular shape in 7 cases, star shape in 3 cases, dot-line shape in 3 cases, triangle in 1 case, and the blind end of 19 cases(82.6%) was approximately flat to the lower edge of L5. Conclusion Different degrees of epidural lipomatosis in L5/S1 segment show certain characteristics in MRI findings, and the higher the grade, the higher the proportion of dural sac compression. Understanding these signs is helpful to prompting clinical attention. |
| Key words: Spinal epidural lipomatosis(SEL) Lumbar spine Magnetic resonance imaging(MRI) |
