title: Pseudomalignant myositis ossificans.
abstract: PMO is characterized by the following: no history of antecedent trauma, localized expanding soft tissue mass, peripheral calcification surrounding a radiolucent center on plain radiographs and CT scans, microscopic evidence of zonation, and self limited natural history.
authors.affiliation: Department of Orthopedics, Children's Hospital, Louisiana State University, New Orleans 70118.
authors.forename: S D
authors.initials: SD
authors.lastname: Heinrich
authors.forename: M M
authors.initials: MM
authors.lastname: Zembo
authors.forename: G D
authors.initials: GD
authors.lastname: MacEwen
mesh_terms: D000293:Adolescent; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D009221:Myositis Ossificans / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed