title: Lumbar disc herniation causing focal expansion of the spinal canal.
abstract: A case of disc prolapse expanding the lumbar spinal canal by eroding the dorsal aspect of the body of L4 vertebra is reported. Despite no previous reports this condition is not considered to be extremely rare.
authors.affiliation: Department of Radiology, Royal Free Hospital, London, United Kingdom.
authors.forename: A R
authors.initials: AR
authors.lastname: Valentine
authors.forename: A D
authors.initials: AD
authors.lastname: Platts
authors.forename: M
authors.initials: M
authors.lastname: Choksey
authors.forename: R S
authors.initials: RS
authors.lastname: Maurice-Williams
mesh_terms: D000328:Adult; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D011859:Radiography; D013115:Spinal Canal / Q000000981:diagnostic imaging* / Q000473:pathology