A case of cystic foreign body granuloma in the mental region caused by long-term inclusion of metal fragments of a sword

DOI 3 Citations 9 References
  • TANAKA Shigeo
    Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo
  • OKADA Hiroyuki
    Department of Pathology, Nihon University School of Dentistry
  • KOIZUMI Yasuyuki
    Department of Pathology, Nihon University School of Dentistry
  • SHIBUTANI Jun
    Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo
  • AKIMOTO Yoshiaki
    Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo
  • YAMAMOTO Hirotsugu
    Department of Pathology, Nihon University School of Dentistry

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Other Title
  • 銃剣破折片の長期迷入によるオトガイ部嚢胞状異物肉芽腫の１例

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Abstract

A case of cystic foreign body granuloma in the mantal region caused by inclusion of metal fragments of a sword for 60 years is reported. A 76-year-old man was referred because of a painless swelling in the mental region. Radiological examination suggested a cystic lesion containing foreign bodies. Enucleation of the lesion was performed. The foreign bodies were metal fragments of a sword, found floating in the cystic fluid in the lumen. Histopathologically, the formation of a cyst without an epithelial lining was recognized. The cyst wall was composed of granulation or fibrous connective tissue with hyalinization, many foamy and multinucleated giant cells, and dark brown exogenous pigmentation. The histopathological diagnosis was a foreign body granuloma with cyst formation.

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