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Usefulness of cone beam computed tomography for odontogenic myxoma

¹ Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, Tokyo, Japan; ² Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan; ³ Department of Pathology, Nihon University School of Dentistry, Tokyo, Japan; ⁴ Division of Bio-defence, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan

*Correspondence to: M Araki, Department of Radiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Email: araki-m{at}dent.nihon-u.ac.jp

Received 6 June 2006; revised 3 October 2006; accepted 3 November 2006

A case of odontogenic myxoma is reported as showing a cyst-like pattern with a partially thick but vague and unclear radiopaque border between the left mandibular second premolar and first molar on rotational panoramic radiography. Internal structure of the lesion displayed radiolucency with a sparse and coarse trabecular pattern. No expansion of bucco-lingual cortical bone was apparent. The radiographic pattern of odontogenic myxoma did not resemble a tennis racket-like or straight, curved and coarse septal appearance on panoramic radiography, but characteristic findings were noted on cone beam CT. Cone beam CT may prove extremely useful in clarifying detailed internal structure and the state of margins.

Keywords: odontogenic myxoma; rotational panoramic radiography; cone beam computed tomography; cyst-like pattern