Chin J Dent Res 20 (2017), No. 3 20. Sep. 2017
Chin J Dent Res 20 (2017), No. 3 (20.09.2017)
Page 169-172, doi:10.3290/j.cjdr.a38772, PubMed:28808701
Osteosarcoma of the Mandible: a Case Report with CT, MRI and Scintigraphy
Sue, Mikiko / Oda, Takaaki / Sasaki, Yoshihiko / Kameta, Ayako / Okada, Yasuo / Ogura, Ichiro
Osteosarcomas are especially rare in the mandible and maxilla, representing 1.6% of all bony malignant tumours. In this article, we described a case of osteosarcoma of the mandible. Computed tomography (CT) image showed a well-circumscribed homogeneous mass, with nonhomogeneous contrast enhancement. T1-weighted magnetic resonance imaging (MR) image showed intermediate signal intensity on, and after administration the lesion showed signal intensity lower than muscle. T2-weighted MR image showed heterogeneous high signal intensity. Bone scintigraphy revealed monostatic involvement of the mandible with a homogenous intense uptake pattern. Ga-67 citrate scintigraphy revealed significantly increased uptake. Histopathological examination confirmed the diagnosis of osteosarcoma.
Keywords: CT, MRI, osteosarcoma, scintigraphy