title: Osteopetrosis - Classic Imaging Findings in the Spine.
authors.affiliation: Resident Physician, Department of Radiology, David Grant USAF Medical Center , California, US .
authors.forename: Jared D
authors.initials: JD
authors.lastname: Kirkland
authors.affiliation: Program Director, Diagnostic Radiology Residency, David Grant USAF Medical Center , California, US .
authors.forename: William T
authors.initials: WT
authors.lastname: O'Brien
keywords: Bone within a bone; Lumbar vertebrae; Sandwich vertebra