Multiple mandibular static bone depressions attached to the three major salivary glands
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A Stafne bone defect is a static bone depression in the mandible that is commonly observed in cortical bone near the mandibular angle. We herein present a rare case in which static bone depressions attached to the three major salivary glands were observed on panoramic radiography and computed tomography (CT). The three static bone depressions in the mandible were visualized on a panoramic radiograph and CT as oval radiolucent masses in a 68-year-old man. The CT numbers in the bone depressions ranged from 10 to 50 HU, and they were close to those of the respective salivary glands. Based on the CT numbers, the areas in the bone depressions were determined to be a normal parotid gland, sublingual gland, and submandibular gland. The patient underwent a follow-up examination and did not request further consultation.
KeywordsBone depression Mandible Salivary glands Radiography
Compliance with ethical standards
Conflict of interest
This study was supported in part by grants-in-aid for scientific research to Yasuhiro Morimoto from the Ministry of Education, Science, Sports and Culture of Japan. Shun Nishimura, Kenji Osawa, Tatsurou Tanaka, Yoshiharu Imamura, Shinya Kokuryo, Manabu Habu, Takaaki Jyoujima, Yuichi Miyamura, Ken-ichi Mochida, Tomoki Inoue, Shinji Kito, Nao Wakasugi-Sato, Shinobu Matsumoto-Takeda, Masafumi Oda, Daigo Yoshiga, Masaaki Kodama, Masaaki Sasaguri, Kazuhiro Tominaga, Izumi Yoshioka, and Yasuhiro Morimoto declare that they have no conflict of interest.
Human rights statement and informed consent
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent was obtained from the patient for being included in the study.
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