title: Reactive soft-tissue mass associated with osteoid osteoma: correlation of MR imaging features with pathologic findings.
abstract: The authors retrospectively reviewed three cases of histologically documented osteoid osteoma in which magnetic resonance (MR) imaging was performed prior to surgical excision. In all three cases, MR imaging demonstrated abnormal signal intensity characteristics, and use of gadopentetate dimeglumine resulted in enhancement. These findings correlated with a reactive soft-tissue mass with myxomatous change, as well as with cell-depleted, juxtanidal bone marrow that contained proteinaceous material. These MR imaging findings can easily be confused with those of a malignant tumor or osteomyelitis.
authors.affiliation: Department of Radiology, University of Michigan Hospitals, Ann Arbor 48109.
authors.forename: E R
authors.initials: ER
authors.lastname: Woods
authors.forename: W
authors.initials: W
authors.lastname: Martel
authors.forename: S H
authors.initials: SH
authors.lastname: Mandell
authors.forename: J P
authors.initials: JP
authors.lastname: Crabbe
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D004727:Endothelium / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009132:Muscles / Q000473:pathology*; D010017:Osteoma, Osteoid / Q000175:diagnosis* / Q000473:pathology; D011884:Radius; D013125:Spinal Neoplasms / Q000175:diagnosis / Q000473:pathology; D013904:Thoracic Vertebrae; D013977:Tibia