顎関節部に生じたガングリオンの1例

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  • A case of ganglion of the temporomandibular joint
  • ガク カンセツブ ニ ショウジタ ガングリオン ノ 1レイ

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Ganglions are cystic lesions arising in joints such as the wrist and ankle, but rarely occur in the temporomandibular joint. We report a ganglion involving the temporomandibular joint and review the literature on this rare entity.<br>An 80-year-old man presented to a local hospital because of a swelling in the right preauricular region that had persisted for 2 months. He was referred to our hospital for surgical resection of a mass found on MRI. Fine-needle aspiration produced a gelatinous material with a small amount of nonkeratinized squamous epithelium and histiocytes. The mass was clinically diagnosed as a cystic lesion of the right temoporomandibular joint and was surgically resected under general anesthesia. Microscopic examination showed a layered structure of the cyst wall without an epithelial lining, which is consistent with a diagnosis of ganglion. One year after surgery, there has not been any evidence of recurrence.

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