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KMID : 0388720120190030090
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Journal of Korean Society of Spine Surgery
2012 Volume.19 No. 3 p.90 ~ p.96
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Incidentally Detected Concurrent Lower Thoracic Lesions in Extended Lumbar Spine MRI
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Chung Jae-Yoon
Lim Ji-Hyun
Seo Hyoung-Yeon
Kim Ha-Sung
Kim Do-Youn
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Abstract
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Study Design: Retrospective study.
Objectives: To evaluate the prevalence and associated factors of the concurrent lower thoracic lesions in patients who have a lumbar spine disease, using the extended lumbar MRI.
Summary of Literature Review: There are no studies regarding the concurrent thoracic lesions with lumbar disease.
Materials and Methods: All the patients, who had visited the out-patient department (OPD) of orthopaedic surgery in our hospital and underwent lumbar spine MRI, were studied during 1 year. Totally, 750 patients were included. The extended lumbar spine MRI contained additional extended T2-weighted sagittal images that cover the lower thoracic vertebrae with 35 centimeters long. We analyzed the highest observable level, characteristics of detected thoracic lesions. Those lesions were classified according to the severity of compression of the spinal cord and investigation for associated factors of patients. Also, the times for additional tests were measured.
Results: Additional tests were able to observe up to the 7th thoracic vertebrae. In 257 cases (34.3%), the lower thoracic lesions were detected and increased with aging (p<0.001). A total of 48 patients (6%) had the lesion compressing the spinal cord and 28 patients needed further evaluation for the lower thoracic lesion. Further, 2 cases were treated surgically for lower thoracic lesions. Scanning extra time for additional test were 3 minutes.
Conclusions: The prevalence of lower thoracic lesions accompanied with the lumbar disease was 34% in this study. Therefore, additional extended lumbar spine MRI is needed to check possible concurrent lesions in the lower thoracic spine.
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KEYWORD
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Thoracic spine, Concurrent lesion, MRI
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