title: Imaging corner. Unknown case.
authors.affiliation: College of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
authors.forename: B J
authors.initials: BJ
authors.lastname: Schulman
authors.forename: L A
authors.initials: LA
authors.lastname: Loevner
authors.forename: S
authors.initials: S
authors.lastname: Simon
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D008875:Middle Aged; D018908:Muscle Weakness / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D010264:Paraplegia / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D013115:Spinal Canal / Q000473:pathology* / Q000503:physiopathology; D013122:Spinal Diseases / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D013131:Spine / Q000473:pathology* / Q000503:physiopathology