症例報告木片による咬筋内異物の2症例

概要

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Two cases with persistent inflammatory symptoms involving the cheek were treated. Signs included trismus and refractory fistula due to a chip of wood as a traumatic foreign body in the masseter muscle. Case 1 could be diagnosed by CT, while case 2 could be diagnosed by both CT and ultrasonography. Following removal of the foreign body, symptoms improved in both cases. X-rays were unable to detect the wooden foreign body. The early stage of diagnosis is important to prevent persistent inflammation as a result of an inaccurate initial diagnosis. Ultrasonography, CT and MRI are useful for diagnosing a wooden foreign body. A traumatic foreign body in the masseter muscle is rare but can be encountered in clinical practice. Therefore, it is necessary to consider a foreign body when a patient shows signs of persistent inflammation of a cheek such as lockjaw, refractory fistula, and abscess.