title: Atypical multiple benign osteoblastomas accompanied by simple bone cysts. A case report.
abstract: A case of atypical benign osteoblastomas occurring at multiple sites in the maxilla and mandible of a 38-year-old woman, in association with simple bone cysts, is described. The tumors produced hazy or ground-glass-like semiradiolucent lesions with well-defined or poorly-defined margins on conventional radiographs. Histologically, the lesions were characterized by a proliferation of plump osteoblast-like cells forming trabeculae of osteoid and immature bone in a well-vascularized stroma. In addition, simple bone cysts associated with a radiolucent-radiopaque lesion consisting of lamellar bone and loose connective tissue were found next to one of the tumours. Possible pathogenesis of the tumours and cysts is discussed.
authors.affiliation: First Dept. of Oral and Maxillofacial Surgery, School of Dentistry, Niigita University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Asada
authors.forename: I
authors.initials: I
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: M
authors.initials: M
authors.lastname: Fukushima
mesh_terms: D000328:Adult; D001845:Bone Cysts / Q000473:pathology; D005260:Female; D006801:Humans; D008336:Mandibular Diseases / Q000473:pathology; D008339:Mandibular Neoplasms / Q000473:pathology; D008441:Maxillary Neoplasms / Q000473:pathology; D009378:Neoplasms, Multiple Primary / Q000473:pathology; D010017:Osteoma, Osteoid / Q000473:pathology