title: Spontaneous progression of vertebral intraosseous pneumatocysts to fluid-filled cysts.
abstract: Intraosseous pneumatocyst is a relatively rare condition, and its natural course is not known. We report two cases of intraosseous pneumatocyst of vertebra with resorption of gas and its replacement with fluid shown on follow-up cross-sectional imaging. The mechanism influencing the course of these appearances is unclear. However, the benign nature of intraosseous pneumatocyst needs to be recognized and biopsy avoided.
authors.affiliation: Department of Radiology, Iwate Medical University School of Medicine, Morioka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nakayama
authors.forename: S
authors.initials: S
authors.lastname: Ehara
authors.forename: H
authors.initials: H
authors.lastname: Hama
mesh_terms: D001845:Bone Cysts / Q000175:diagnosis / Q000473:pathology*; D002574:Cervical Vertebrae / Q000473:pathology*; D020420:Cyst Fluid; D006801:Humans; D008159:Lumbar Vertebrae / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed