Anterior dural ectasia mimicking a lytic lesion in the posterior vertebral body in ankylosing spondylitis |
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Authors: | Bele Keerthiraj Pendharkar Hima Shriniwas Venkat Easwer Gupta Arun Kumar |
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Institution: | Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India. |
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Abstract: | Anterior dural ectasia is an extremely rare finding in ankylosing spondylitis (AS). The authors describe a unique case of AS in which the patient presented with cauda equina syndrome as well as an unusual imaging finding of erosion of the posterior aspect of the L-1 (predominantly) and L-2 vertebral bodies due to anterior dural ectasia. Symptomatic patients with long-standing AS should be monitored for the presence of dural ectasia, which can be anterior in location, as is demonstrated in the present case. |
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