title: Sequestered disc fragment mimicking a psoas abscess.
abstract: BACKGROUND
  If a herniated lumbar disc fragment extrudes and migrates away from the spinal column, the radiographic appearances can be confusing.
  
  
  METHODS
  In this article, we report a rare case of a sequestrated disc fragment in the psoas muscle, discrete from the adjacent disc space, which presented with features similar to a psoas abscess on imaging studies.
  
  
  CONCLUSIONS
  It is vital that in such cases the correct diagnosis is made to avoid unnecessary treatments and inappropriate management.
authors.affiliation: Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, London WC1N 3BG, United Kingdom. c.kachramanoglou@ucl.ac.uk
authors.forename: Carolina
authors.initials: C
authors.lastname: Kachramanoglou
authors.forename: Simon F
authors.initials: SF
authors.lastname: Farmer
authors.forename: David
authors.initials: D
authors.lastname: Choi
mesh_terms: D003937:Diagnosis, Differential; D005548:Foreign-Body Migration / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D007403:Intervertebral Disc / Q000473:pathology*; D007405:Intervertebral Disc Displacement / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D016659:Psoas Abscess / Q000175:diagnosis*; D016658:Psoas Muscles / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome