A glass foreign body in the external auditory canal. Report of a case

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A 84 year old man with a glass foreign body which was blocking his ear canal was reported. The patient had a history of hospitalization for laceration of the pinna by stumble down accident but no foreign bodies were noted in the external auditory canal at that time. The patient subsequently suffered from exhibited left otorrhea over four months and on medical examination, a glass foreign body was observed blocking the ear canal. There were no abnormal findings in X-ray examination, but by CT the foreign body was confirmed to be in the external ear canal. The foreign body was removed by post auricular incision under local anesthesia. The foreign body was the glass piece which was 12×24×3 mm. An experimental study was performed using a dummy head, and it was confirmed that the glass piece was able to detect only on thin bony part around pinna, but it was unable to detect on hard bony part as mastoid part. It was not sufficient to image the glass object in the mastoid part of the ear only X ray film and we stressed that CT was useful to confirm the location of the foreign body such as glass piece.
特定非営利活動法人日本頭頸部外科学会の論文