{"id":"5e9ef3d3-3d0a-49e8-9332-8249a113cd62","slug":"redundant-nerve-root-syndrome-mimicking-an-intradural-spinal-cord-tumor-a-case-report","title":"Redundant nerve root syndrome mimicking an intradural spinal cord tumor: A case report","authors":["Satoshi Kawajiri","Ryu Kurokawa","Tetsuro Shingo"],"abstract":"Background: The redundant nerve root (RNR) syndrome is a pathological condition in which the cauda equina develops into a severely flexed/tortuous spiral mass above a level of severe lumbar stenosis. Case Description: A 70-year-old male presented with bilateral neurogenic claudication attributed to a MRI-documented intradural extramedullary lesion at the L1 level with severe adjacent level/inferior L2/3 stenosis. At surgery, intradural exploration at L1 revealed an edematous cauda equina consistent with the diagnosis of the RNR syndrome. Conclusion: The RNR syndrome should be included among the differential diagnostic considerations when non-enhancing lesions are encountered above levels of marked lumbar stenosis.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/5e9ef3d3-3d0a-49e8-9332-8249a113cd62/featured/hero-1781560580557.png","publishDate":"2023-01-20T00:00:00.000Z","doi":"10.25259/SNI_1150_2022","categories":["Spine","Case Report"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/5e9ef3d3-3d0a-49e8-9332-8249a113cd62/pdf"}