Osseous Choristoma of the Buccal Mucosa: A Case Report

Kazuhiko Tanio, Keisuke Takahashi, Masami Yao, Shuji Ando, Satoshi Kano, Kazuo Ryoke, Takeshi Hamada and Shu Nakamoto*

Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Tottori University, Yonago 683 and *Department of Laboratory Medicine, Tottori Prefectural Central Hospital, Tottori 680, Japan

Osseous choristomas of intra-oral soft tissue are extremely rare. A case of osseous choristoma in the buccal mucosa is presented. A 55-year-old male was referred to our clinic complaining of a mass formation in the buccal mucosa. A tumor 25 × 25 × 30 mm in size was subsequently removed under local anesthesia. Microscopic examination revealed that the tumor was composed of lamellar bone having fatty marrow and osteoblasts. A diagnosis of osseous choristoma was therefore made.

Key words: buccal mucosa; osseous choristoma; osteoma

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