• Neuroimaging Clin. N. Am. · Aug 2003

    Review

    Benign odontogenic tumors of the mandible and maxilla.

    • Takashi Kaneda, Manabu Minami, and Tohru Kurabayashi.
    • Department of Radiology, Nihon University School of Dentistry at Matsudo, 2-870-1, Sakaecho-Nishi, Matsudo, Chiba 271-8587, Japan. tkaneda@mascat.nihon-u.ac.jp
    • Neuroimaging Clin. N. Am. 2003 Aug 1; 13 (3): 495-507.

    AbstractBenign odontogenic tumors are characterized by imaging findings of expansile growth and well-defined margins with smooth borders, and their appearance is very similar to that of odontogenic and nonodontogenic cysts. From the viewpoint of diagnostic imaging of odontogenic tumors, teeth are designed differently according to their origin from the apex or crown. Therefore, for differential diagnosis, it is necessary to select diagnostic methods that make it possible to evaluate these findings in detail. Intraoral and panoramic radiography are highly effective in examining the relationship between teeth and lesions, especially the vertical relationship. When a lesion is suspected in the mandible or maxilla on CT, MR imaging, or nuclear medicine, these procedures must be performed as supplementary imaging techniques. CT demonstrates well the degree of bone resorption, osteosclerosis, cortical bone swelling, destruction, and calcification. MR imaging is effective in differentiating between tumors and cysts, evaluating the infiltration of malignant tumors in the jawbone and surrounding soft tissue, and detecting bone marrow changes of the jaw. Differentiation between tumors and cysts must be achieved by contrast-enhanced studies. Combining plain radiography with advanced imaging techniques, including CT and MR imaging, can improve the accuracy of diagnosing odontogenic tumors.

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