• Kohei Hashimoto, Keigo Uchimura, Sachika Hara, Taiki Manabe, Toshiki Morimoto, Kei Nakamura, Hideki Sakakibara, Hideki Kanda, Saki Shigemi, Yuto Iwanaga, Takashi Tachiwada, Kei Yamasaki, Toshinori Kawanami, and Kazuhiro Yatera.
• Department of Respiratory Medicine, School of Medicine, University of Occupational and Environmental Health, Japan.
• J. UOEH. 2020 Jan 1; 42 (4): 347-352.

AbstractPatients with bronchial foreign bodies often present with subjective symptoms, mainly cough, and removing the foreign bodies is difficult. Bronchial foreign bodies are mostly located in the right lower bronchus, and rarely in the right middle bronchus. An 85-year-old man had no subjective symptoms. He aspirated an artificial tooth during dental treatment the day before visiting our clinic, and consulted his home doctor. He was admitted to our hospital because a chest radiograph indicated the presence of a foreign body in the right middle and lower lung field. Chest computed tomography showed that the bronchial foreign body was located in the right middle bronchus, and it was accompanied by an artifact in the circumference of the lesion, and it seemed to be the metal piece of an artificial tooth. Three-dimensional CT showed the root of the artificial tooth located in center side of the right middle bronchus, and, considering the invasiveness, we decided to remove the tooth by flexible bronchoscopy. The bronchoscopy revealed a metal piece occluding the right middle bronchus without granulation, and we could remove the tooth immediately by grasping the root of the tooth with alligator forceps. We experienced a case of a foreign body located in the right middle bronchus without respiratory symptoms. It is important to carry out image examinations, because elderly patients may not exhibit respiratory symptoms.

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