顎下部へん平上皮癌に併存した口底部壊死性唾液腺化生の1例

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  • A case of necrotizing sialometaplasia of the oral floor accompanied by squamous cell carcinoma of the submandibular region.

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A case of necrotizing sialometaplasia (NSM) of the oral floor accompanied by squamous cell carcinoma of the submandibular region is reported. The patient was a 76-year-old man with a painless swelling of the submandibular region. Although a biopsy of the floor of the mouth provided histological evidence of NSM histologically, that in the submandibular region revealed squamous cell carcinoma.<BR>NSM most commonly affects the minor salivary glands of the palate, but may occur at other sites such as the parotid gland and the glands of the buccal mucosa. However, this case is very unusual because NSM arose in the floor of the mouth. The lesion was considered to be caused by ischemia secondary to compression by the tumor in the submandibular region.

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