title: Osteoblastic osteosarcoma of the mandible: findings on Tc-99m HMDP bone and Ga-67 citrate scintigraphy.
abstract: A 25-year-old woman presented with a disturbance in the opening of her mouth 5 months before admission. On admission, painful swelling of the right preauricular region was revealed. Computed tomography (CT) demonstrated a soft tissue density mass around the right condylar process of the mandible. Tc-99m hydroxymethylene diphosphonate (HMDP) bone scintigraphy and Ga-67 citrate scintigraphy showed avid uptake in the mass. The tumor was histologically identified as an osteoblastic osteosarcoma of the right mandible. There are few reports of Ga-67 citrate scintigraphy findings of osteoblastic osteosarcoma of the mandible. The accumulation patterns on Tc-99m HMDP bone scintigraphy and Ga-67 citrate scintigraphy are possibly characteristic of osteoblastic osteosarcoma of the mandible.
authors.affiliation: Department of Radiology, Kanazawa Medical University, Ishikawa, Japan. tomoko-t@kanazawa-med.ac.jp
authors.forename: Tomoko
authors.initials: T
authors.lastname: Takahashi
authors.forename: Manabu
authors.initials: M
authors.lastname: Oguchi
authors.forename: Gencho
authors.initials: G
authors.lastname: Kuga
authors.forename: Kotaro
authors.initials: K
authors.lastname: Higashi
authors.forename: Hisao
authors.initials: H
authors.lastname: Tonami
authors.forename: Itaru
authors.initials: I
authors.lastname: Yamamoto
authors.forename: Natsuki
authors.initials: N
authors.lastname: Segami
authors.forename: Takayuki
authors.initials: T
authors.lastname: Nojima
mesh_terms: D000328:Adult; D018771:Arthralgia / Q000175:diagnosis / Q000209:etiology; D002951:Citrates; D005260:Female; D005708:Gallium; D006801:Humans; D008339:Mandibular Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D018215:Osteoblastoma / Q000150:complications / Q000000981:diagnostic imaging*; D012516:Osteosarcoma / Q000150:complications / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives*; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging*
chemical_list: D002951:Citrates; D019275:Radiopharmaceuticals; C024226:technetium Tc 99m hydroxymethylene diphosphonate; D005708:Gallium; C103850:gallium citrate; D013669:Technetium Tc 99m Medronate