1.  Which cause of failed back surgery is present:
a.  peridural fibrosis
b.  post laminectomy spondylolisthesis
c.  pseudomeningocele
d.  arachnoiditis
e.  epidural adhesion

2.  What is the cause of this finding?

3.  Name at least two differential diagnoses.

4.  What is the treatment for this finding?


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