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Korean J Oral Maxillofac Radiol. 2000 Jun;30(2):132-137. Korean. Case Report.
Lee JH , Park IW , Choi HM , Heo MS , Lee SS .
Department of Oral and Maxillofacial Radiology, College of Dentistry, Kangnung National University, Korea.
Department of Oral and Maxillofacial Radiology and Dental Research Institute, College of Dentistry, Seoul National University, Korea.

Actinomycosis is defined as a chronic, specific, suppurative, granulomatous disease caused mainly by the anaerobic, gram positive organism, Actinomyces israelii. Actinomycosis in the salivary gland is a rare disease that is caused by an inhabitant of the normal flora. We report the case of the actinomycosis of submandibular gland. A 53-year old man presented with the swelling on left submandiblar area. The lesion was not painful but had been increasing for about 10 days. In the CT view, the internal portion of the mass showed homogeneous moderate signal. The mass had continuities with the inferior portion of the left enlarged submandibular gland. In the MRI, there was a mass that showed a buldging pattern inferiorly in the left submandibular gland without bony invasion sign. The biopsy shows the colony of special organism. Many filaments are discovered with clubbed ends diffused from center of colony. We diagnosed this disease as actinomycosis in the submandibular gland by the postoperational biopsy.

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