Epidural block-induced ligamentum flavum hematoma mimicking epidural hematoma in the lumbar spine: a case report

被引:4
作者
Lee, Yeon Soo [2 ]
Yi, Jin Seok [3 ]
Kim, Hyun Jeong [2 ]
Kim, Jong Ok [4 ]
Choi, Eun Seok [1 ]
机构
[1] Catholic Univ Korea, Daejeon St Marys Hosp, Dept Rehabil Med, Taejon 301723, South Korea
[2] Catholic Univ Korea, Daejeon St Marys Hosp, Dept Radiol, Taejon 301723, South Korea
[3] Catholic Univ Korea, Daejeon St Marys Hosp, Dept Neurosurg, Taejon 301723, South Korea
[4] Catholic Univ Korea, Daejeon St Marys Hosp, Dept Pathol, Taejon 301723, South Korea
关键词
Epidural block; Ligamentum flavum; Epidural hematoma; Lumbar spine; THORACIC SPINE; COMPRESSION;
D O I
10.1016/j.spinee.2010.12.014
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
BACKGROUND CONTEXT: The ligamentum flavum may undergo various pathologic changes, including hypertrophy, calcification, ossification, and cyst formation. Ligamentum flavum hematoma (LFH) is a rare cause of spinal nerve root or cord compression and usually occurs in the lumbar spine. We report a 66-year-old woman with LFH occurring after an epidural block, mimicking epidural hematoma on lumbar spine magnetic resonance imaging (MRI). PURPOSE: To document MRI findings of epidural block-induced LFH mimicking epidural hematoma. STUDY DESIGN/SETTING: A case report. METHODS: A 66-year-old woman presented with a 6-month history of pain in the left buttock and suffered abrupt weakness and numbness in her left leg after an epidural block procedure without any other trauma history. Lumbar spine MRI with enhancement showed a hematoma-like mass in the posterior epidural space at L3-L4 level. RESULTS: The patient underwent a left hemilaminectomy at the L3 level, and a surgeon found a small hematoma between inner and outer walls of ligamentum flavum instead of an epidural hematoma and performed the removal of the hypertrophied ligamentum flavum including the intraligamentary lesion. Histopathologic examination confirmed the lesion as hematoma in the left ligamentum flavum. After surgery, the patient recovered without significant neurologic deficit. CONCLUSIONS: Epidural block-induced LFH can mimic posterior epidural hematoma on MRI. Careful evaluation of hematoma, location, and imaging findings is required for accurate diagnosis. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:E23 / E27
页数:5
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