{"title":"A rare case of lumbar intraspinal osteolipoma presenting with a sciatic pain.","authors":"Daishiro Abe, Kiyoshi Ito, Tetsuyoshi Horiuchi","doi":"10.25259/SNI_281_2025","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Osteolipoma constitutes <1% of all lipomas. They are only rarely located in the spine. Here, we report an extremely rare lumbar intraspinal osteolipoma, along with a review of its clinical and radiological features.</p><p><strong>Case description: </strong>A 57-year-old male presented with a 1-year history of progressively worsening of his sciatica. The magnetic resonance imaging (MRI) revealed a right-sided extradural lesion compressing the cauda equina at the L3/L4 level. The lesion was hyperintense with a hypointense rim on both T1- and T2-weighted images, while the computed tomography (CT) showed that it was hyperdense (i.e., osseous). Following operative resection, the patient's symptoms resolved. Pathologically, it proved to be a benign osteolipoma.</p><p><strong>Conclusion: </strong>MRI and CT studies documented a L3/4 extradural, osseous lesion causing cauda equina compression. Following surgical removal, the patient's symptoms fully resolved.</p>","PeriodicalId":94217,"journal":{"name":"Surgical neurology international","volume":"16 ","pages":"195"},"PeriodicalIF":0.0000,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12134882/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surgical neurology international","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.25259/SNI_281_2025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Background: Osteolipoma constitutes <1% of all lipomas. They are only rarely located in the spine. Here, we report an extremely rare lumbar intraspinal osteolipoma, along with a review of its clinical and radiological features.
Case description: A 57-year-old male presented with a 1-year history of progressively worsening of his sciatica. The magnetic resonance imaging (MRI) revealed a right-sided extradural lesion compressing the cauda equina at the L3/L4 level. The lesion was hyperintense with a hypointense rim on both T1- and T2-weighted images, while the computed tomography (CT) showed that it was hyperdense (i.e., osseous). Following operative resection, the patient's symptoms resolved. Pathologically, it proved to be a benign osteolipoma.
Conclusion: MRI and CT studies documented a L3/4 extradural, osseous lesion causing cauda equina compression. Following surgical removal, the patient's symptoms fully resolved.
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