JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY

Vol. 55 No. 5       2009

ISSN: 0021-5163      UBIC: 151-J

ABSTRACT

We report a case of a calculus-like calcified body at the anterior portion of the masseter muscle. A 26- year-old man presented with a small, movable, hard mass in the left buccal submucosa. Magnetic resonance imaging revealed a round lesion at the anterior portion of the masseter muscle. The mass appeared to be calcified and was enucleated. The extracted specimen was a spherical, calculus-like, calcified body, measuring 12 X 11 X 9 mm and encased in fibrous tissue. The patient had no history of tumor or trauma. The possibility of parotid sialolithiasis was excluded. The calculus-like calcified body morphologically and histologically resembled a phlebolith, and did not adhere to muscle tissue. The calculus-like calcified body was thus diagnosed as a phlebolith arising from a venule at the anterior portion of the masseter muscle. Keywords: masseter muscle, calcified body, calculus, phlebolith,

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