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1.  MRI Changes of the Spinal Subdural Space after Lumbar Spine Surgeries: Report of Two Cases 
Asian Spine Journal  2011;5(4):262-266.
Although magnetic resonance imaging (MRI) is frequently used to assess the lumbar spine, there are few reports in the medical literature that have evaluated using MRI immediately following spinal surgery. Furthermore, descriptions of the subdural changes after lumbar spine surgery are also infrequent. In this paper, we present two cases with subdural change seen on MRI immediately after lumbar surgery. Both the patients had mild symptoms that resolved spontaneously, and the follow-up MRI scans showed resolution of the subdural changes. Subdural changes should be considered as one of the possible causes of unexpected symptoms in patients following lumbar spinal surgery.
doi:10.4184/asj.2011.5.4.262
PMCID: PMC3230656  PMID: 22164323
Lumbar spine; Subdural change; Magentic resonance imaging; Post-operative period
2.  Hemorrhagic Facet Cyst in the Lumbar Spine Causing Contralateral Leg Symptoms: A Case Report 
Asian Spine Journal  2011;5(3):196-200.
Here we present a case of hemorrhagic lumbar facet cyst presenting with progressive radiculopathy only on the contralateral side. If a patient has previous back pain or neuropathy for several months and then suddenly deteriorates, hemorrhagic facet cyst of the lumbar spine should be part of the differential diagnosis. However, as in the present case, we should be aware that there is a possibility of a contralateral lesion.
doi:10.4184/asj.2011.5.3.196
PMCID: PMC3159070  PMID: 21892394
Hematoma; Facet cyst; Lumbar spine; Zygapophyseal joint

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